A Chevy Camaro drives straight off the top level off a parking garage at 9 m/s. If the car landed 81 meters away from the base of the parking garage, how high (height) was the top level? 196.9 meters 296.9 meters 396.9 meters 496.9 meters​

Answers

Answer 1

Answer:

The correct option is c: 396.9 meters.

Explanation:  

First, we need to find the time at which the car landed:

[tex] v = \frac{x}{t} [/tex]

[tex] t = \frac{x}{v} = \frac{81 m}{9 m/s} = 9 s [/tex]                                                                    

Now, we can find the height of the top-level:

[tex] y_{f} = y_{0} + v_{0_{y}}t - \frac{1}{2}gt^{2} [/tex]

Since the car has only a velocity in the horizontal direction, we have:

[tex] 0 = y_{0} + 0*t - \frac{1}{2}gt^{2} [/tex]

[tex] y_{f} = \frac{1}{2}gt^{2} = \frac{1}{2}9.81 m/s^{2}*(9 s)^{2} = 397 m [/tex]

Therefore, the correct option is c: 396.9 meters.

I hope it helps you!  


Related Questions

In amplitude modulation, which wave property remains constant?

Answers

The carrier frequency remains constant during amplitude modulation. :)

Help me which one dose it go ?:)

Answers

Answer:

3. sportsmanship

4. neither A nor B

Which formula equation shows a reversible reaction?

Answers

Answer:

If this is your question... the answer is C.

Explanation:

For edge:)

Answer:

C on edge2021

Which statement summarizes the difference between mass and weight?

Mass is the downward pull on an object due to gravity, and weight is the amount of matter in an object.
Mass is the amount of matter in an object, and weight is the downward pull on an object due to gravity.
Mass is measured in newtons, and weight is measured in pounds.
Mass is measured in pounds, and weight is measured in newtons.

Answers

Second response. Mass is the amount of matter In object...

Answer:

its B ; mass is the amount of matter in an object, and weight is the downward pull on an object due to gravity.

Explanation:

I just took the test on edge 2020

A roller coaster of mass 2000 kg is rolling down a track with an
instantaneous speed of 10 m/s. The roller coaster has a force of
unknown magnitude act on it, so now it is traveling at only 6
m/s. What was the work done on it?

Answers

Kinetic energy = (1/2) (mass) (speed)²

The coaster's original kinetic energy was

KE = (1/2) (2,000 kg) (10 m/s)²

KE = (1,000 kg) (100 m²/s²)

KE = 100,000 kg-m²/s²

old KE = 100,000 joules

After something slowed it down, its new kinetic energy is

KE = (1/2) (2,000 kg) (6 m/s)²

KE = (1,000 kg) (36 m²/s²)

KE =  36,000 kg-m²/s²

new KE = 36,000 joules

The coaster lost (100,000 - 36,000) = 64,000 joules of KE.

Energy is conserved.  It can't evaporate, disappear, or be destroyed.

That 64,000 joules had to go somewhere.

Someone or something had to do 64,000 joules of work on it in order to slow it down.

The work done by the external force on the roller coaster is 64000 J.

How do you calculate the work done on the roller coaster?

Given that the mass of The roller coaster is 2000 kg and its velocity is 10 m/s. The kinetic energy of the roller coaster is given below.

[tex]KE = \dfrac {1}{2}mv^2[/tex]

[tex]KE = \dfrac {1}{2}\times 2000\times (10)^2[/tex]

[tex]KE = 100000 \;\rm J[/tex]

Since the roller coaster has a force of unknown magnitude which decreases its speed to 6 m/s. For this decreased speed, the kinetic energy is given as below.

[tex]KE'= \dfrac {1}{2}mv'^2[/tex]

[tex]KE'= \dfrac {1}{2}\times 2000\times 6^2[/tex]

[tex]KE' = 36000\;\rm J[/tex]

The work done on the roller coaster is calculated by the change in the kinetic energy for both speeds.

Work Done = KE - KE'

Work = 100000 - 36000

Work = 64000 J

Hence we can conclude that the work done by the external force on the roller coaster is 64000 J.

To know more about the work, follow the link given below.

https://brainly.com/question/3902440.

Object X travels across a horizontal surface and collides with object Y. The velocity as a function of time for object X and object Y before, during, and after the
collision is shown in the graph. Both objects have a mass of 2 kg. Which of the following correctly describes the momentum p of the system and the kinetic
energy K of the system?

Answers

Answer:

The correct option is;

(B) [tex]\underset{P}{\rightarrow}[/tex] is conserved, K Not conserved

Explanation:

From the diagram related to the question and from the question, we have;

m₁ = m₂ = 2 kg

v₁ = 4 m/s, v₂ = -2 m/s, v₃ = 1 m/s, therefore, we have;

The total initial momentum of the system = m₁ × v₁ + m₂ × v₂

m₁ (v₁ + v₂) = 2×(4 - 2) = 4 kg·m/s

The total final momentum of the system = m₁ × v₃ + m₂ × v₃ = 2 ×1 +2 ×1  = 4 kg·m/s

Given that the total initial momentum = The total final momentum, we have that the momentum, p, is conserved

The kinetic energy of the system before collision  = 1/2×m₁×v₁² + 1/2×m₂×v₂²

∴ The kinetic energy of the system before collision  = 1/2*2*(4)² + 1/2*2*(-2)² = 20 J

∴ The kinetic energy of the system after collision  = 1/2×m₁×v₃² + 1/2×m₂×v₃²

1/2*2*(1)² + 1/2*2*(1)² = 2 J

The kinetic energy of the system before collision ≠ The kinetic energy of the system after collision

Therefore, the kinetic energy of the system is not conserved.

If the velocities of object X and object Y after collision is the same (inelastic collision), then only momentum is conserved but if the velocities of both objects after collision are different (elastic collision), then both momentum and kinetic energy are conserved.

According to principle of conservation of linear momentum, the total momentum before and after collision is conserved.

For inelastic collision, only momentum is conserved while kinetic energy is not conserved.

[tex]m_1u_1 \ + \ m_2u_2 = v(m_1 + m_2)[/tex]

[tex]\frac{1}{2} m_1u_1^2 \ + \frac{1}{2} m_2u_2^2 = \frac{1}{2}v^2(m_1+m_2)[/tex]

For elastic collision, both momentum and kinetic energy are conserved;

[tex]m_1u_1 \ + \ m_2u_2 =m_1v_1 \ + \ m_2v_2[/tex]

[tex]\frac{1}{2} m_1u_1^2 \ + \frac{1}{2} m_2u_2^2 = \frac{1}{2}m_1v_1^2 \ +\ \frac{1}{2}m_2v_2^2[/tex]

Thus, we can conclude that, if the velocities of object X and object Y after collision is the same (inelastic collision), then only momentum is conserved but if the velocities of both objects after collision are different (elastic collision), then both momentum and kinetic energy are conserved.

Learn more here:https://brainly.com/question/24424291

Any Answer Would Be Appreciated
A thermometer is removed from a beaker of boiling water and placed in a beaker of room temperature water. The thermometer takes 15 seconds to reach a reading of 25°C. The same thermometer is returned to the boiling water for several minutes. It is then placed under a tap of running water at room temperature.The thermometer takes only 10 seconds to reach a reading of 25°C.
What conclusion could you make about conduction and convection based on these observations?

Your answer:

Conduction is a more efficient method of heat transfer.


Convection is a more efficient method of heat transfer.


No valid conclusion is suggested by these observations.


Conduction and convection are equally efficient methods of heat transfer.

Answers

Answer:

last one.Condution and convection are equzlly efficentmethods of heat transfer.

Explanation:

Answer: B convection is a more efficient method of heat transfer  

Explanation:

hi im learning about zodiac sign can u share urs and what are some things u like to do im a aquarius i play vollyball and sing tysm≅

Answers

Answer:

Im a capricorn ! UwU

Explanation:

And well I like to watch my shows

draw / do art

Listen to music

spend time with people I care about

And secretly sing ;>

Hope I could help . :3

Hope u have a amazing rest of your day / night ! <3

Sleepy~

What is the difference between zone coverage and man coverage, and how can the offense team read those coverages?

Answers

Answer:

zone coverage is about sensing what the offense is attempting to accomplish against the defense. Each defensive player reacts when the ball is in the air, whereas in man-to-man coverage, he simply plays the receiver.

Explanation:

If a golf ball is dropped from the thirteenth floor of a building, ignoring air resistance, after falling for 7.00 seconds the speed of the ball will be?

Answers

Explanation:

We know that

V = U + at

Here, u is 0 and a is 9.8 which is acceleration due to gravity.

Thus,

V = 9.8 *7

V = 68.6 m/s

When the wedges are removed, the cars will move. Predict which direction they will move and when they will stop(help due by tonight)

Answers

Answer:

backwards. they will stop.

Explanation:

they will stop at a point because of the friction and that it couldn't move for ever

when carbon and oxygen combine chemically, what is true about the mass of the product

Answers

Answer: Equal to the mass of the carbon plus the mass of the oxygen

Explanation:

How does the period affects the centripetal force?

Answers

According to the Equation (2), centripetal force is proportional to the square of the speed for an object of given mass M rotating in a given radius R

What is the focal length of a lens

Answers

Answer:

The focal length of a lens is the distance between the lens and the image sensor when the subject is in focus, usually stated in millimeters.

this is refering to a camera lens, not glasses and what not, glasses do not have a focus length, only equipment that has the ability to focus

Explanation:

May I have brainliest please? :)

You are skateboarding in your friend's driveway. You hit a rock and your
skateboard stops, but you go flying forward and hit the ground because of

Answers

Answer:

the rock hit the board you go flying because you board stops but you have energy still going so there for you go flying

Explanation:

Answer: You are correct the reasoning is inertia.

Explain: Inertia is the ability to resist change in movement. But that is irrelevant to this question. Newtons first law, “An object in motion stayes in motion unless stopped by an outside force. This case, the outside force is the ground.

A car traveling initially at 7.35 m/s acceler-
ates at the rate of 0.824 m/s² for 2.09 s.
What is its velocity at the end of the accel-
eration?
Answer in units of m/s.

Answers

Answer:

[tex]v_f=9,07~m/s[/tex]

Explanation:

Constant Acceleration Motion

It's a type of motion in which the velocity of an object changes uniformly in time.

Being a the constant acceleration, vo the initial speed, vf the final speed, and t the time, the following relation applies:

[tex]v_f=v_o+at[/tex]

The car initially travels at vo=7.35 m/s and accelerates at a rate of [tex]a=0.824~m/s^2[/tex] during t=2.09 s.

The final velocity is:

[tex]v_f=7.35+0.824*2.09[/tex]

[tex]\mathbf{v_f=9,07~m/s}[/tex]

1) what is viscosity?​

Answers

a liquids ability to flow. basically it’s how fast it flows and it’s thickness. have a great night/day!

high school and collage students answers only.
Are all compounds molecules? Why or why not?

Answers

All compounds are molecules but not all molecules are compounds. A molecule is two atoms joined together. A compound is two different atoms joined together.

A politician running for office tells a crowd at a rally that the only way to keep the food chain safe is to stop allowing the growth of genetically-modified crops, or GMOs. Should the politician's statement be considered a scientific fact?
A.
Yes. Public speakers are known to be experts in every subject.
B.
No. He presented no scientific data to support his claim.
C.
No. Only scientists can talk about scientific facts.
D.
Yes. He is probably friends with scientists who work with GMOs.

Answers

Answer:

B. No. He presented no scientific data to support his claim.

Helium is an inert gas used in lighter-than-air crafts like blimps because
it is nonflammable. It is formed deep underground over millions of
years as a by-product of the formation of natural gas. Almost all of the
world's helium is found in deep deposits of natural gas within 250 miles
of Amarillo, Texas. Helium can be considered what type of natural
resource? SC.G.2.3.1
A. a fossil fuel
B. a renewable resource
C. a part of the carbon cycle
D. a nonrenewable resource

Answers

Answer:

D. a nonrenewable resource

Explanation:

From the description given, helium is a non-renewable resource.

A non-renewable resource is one in which cannot be replenished  by natural processes as they consumed. They get depleted as they are removed from nature. Helium formation cannot match its consumption if exploited.

A 120-kg roller coaster cart is being tested on a new track, and a crash-test dummy is loaded into it. The roller coaster starts from rest at point A which is 25 m above point B. In your own words, what physics ideas would you be able to use to predict how fast the cart is moving at point B? What calculations would you use, what things would you be measuring, and what physics principles or laws would you use to make this calculation

Answers

Answer:

vb = 22.13 m/s

So, the only thing that was measured here was the height of point A relative to point B. And the Law of Conservation of Energy was used.

Explanation:

In order to find the speed of roller coaster at Point B, we will use the law of conservation of Energy. In this situation, the law of conservation of energy states that:

K.E at A + P.E at A = K.E at B + P.E at B

(1/2)mvₐ² + mghₐ = (1/2)m(vb)² + mg(hb)

(1/2)vₙ² + ghₐ = (1/2)(vb)² + g(hb)

where,

vₙ = velocity of roller coaster at point a = 0 m/s

hₙ = height of roller coaster at point a = 25 m

g = 9.8 m/s²

vb = velocity of roller coaster at point B = ?

hb = Height of Point B = 0 m (since, point is the reference point)

Therefore,

(1/2)(0 m/s)² + (9.8 m/s²)(25 m) = (1/2)(vb)² + (9.8 m/s²)(0 m)

245 m²/s² * 2 = vb²

vb = √(490 m²/s²)

vb = 22.13 m/s

So, the only thing that was measured here was the height of point A relative to point B. And the Law of Conservation of Energy was used.

Can you hellp me please

Answers

Answer:

i think the answer is B but im not sure

Answer:

B

Explanation:

WILL MARK BRAINLIEST not like anyone answers these.. but i need the RIGHTT ANSWERR people say its A or its D idkk???? u guys confuse me but hereee
The microwave oven was invented in 1945 when some experiments with radar equipment failed and melted some nearby chocolate instead. The scientists realized there were other applications for this energy source. What is this an example of?

A) Creative thinking
B) Scientific method
C) Scientific law
D) Artistic ability

Answers

Answer:

B)

Explanation:

Scientific method- a method of procedure that has characterized natural science since the 17th century, consisting in systematic observation, measurement, and experiment, and the formulation, testing, and modification of hypotheses.

in this, the scientist had to test their theories to find a solution to their problem.

i’m pretty sure it’s A correct me if i’m wrong

which type of bond will sulfer (S) and nitrogen (N) form?

a. metallic bond
b. covalent bond
c. iconic bond

Answers

Answer:

In ionic compounds, electrons are transferred between atoms of different elements ... For example, two hydrogen atoms bond covalently to form an H2 molecule; each ... is released when one mole of H2 molecules forms from two moles of H atoms: ... atom in each pair is more electronegative: (a) N or P. (b) N or Ge. (c) S or F.

Explanation:

A train of mass 5.6 × 10^5kg is at rest in a station.at time t=0s, a resultant force acts on the train and it starts to accelerate foward. The initial acceleration of the train is 0.75m/s. Calculate the resultant force that acts on train this time​.

Answers

Answer:

420000N

Explanation:

Given parameters:

Mass of the train  = 5.6 x 10⁵kg

Acceleration  = 0.75m/s²

Unknown:

Resultant force = ?

Solution:

According to newton's second law, force is the product of mass and acceleration;

   Force  = mass x acceleration

Resultant force that acts on the train is given below;

 Force  = 5.6 x 10⁵kg  x 0.75m/s²  = 420000N

What is the kinetic energy of a 72.2kg cheetah moving at a velocity of 25.9m/s?

Answers

Answer:

K = 24222.94 J

Explanation:

Given that,

Mass of a cheetah, m = 72.2 kg

Velocity of cheetah, v = 25.9 m/s

We need to find the kinetic energy of the cheetah. Due to the motion of an object, it will have kinetic energy which is given by :

[tex]K=\dfrac{1}{2}mv^2\\\\=\dfrac{1}{2}\times 72.22\times (25.9)^2\\\\=24222.94\ J[/tex]

So, the kinetic energy of the cheetah is 24222.94 J.

Which of the following is a device that uses a wedge?
Check all that apply.
A. doorknob
B. axe
C. knife
D. baseball bat

Answers

Answer:

Axe and a knife

A basketball is resting on the ground.
Which claim about the forces acting on the basketball
must be true?

Answers

Answer:

b

Explanation:

there is no net force on the basketball

How are a concave lens and a convex lens alike? How are they different?

Answers

ANSWER

A convex lens acts a lot like a concave mirror. ... A concave lens acts a lot like a convex mirror. Both diverge parallel rays away from a focal point, have negative focal lengths, and form only virtual, smaller images.

the horizontal distance that each thrown object covers increases as
its initial speed...



A:increases
B:decrease
C: stay the same

Answers

Answer:

A

Explanation:

Other Questions
1.What is involved with the describe step of critiquing? 2.How is the analyze step of critiquing done? 3.What does it mean to interpret while critiquing? 4.Briefly describe what is involved with the evaluate step of critiquing. 5.What is a self-critique? Read the last sentence of "Ain't I a Woman?"Obliged to you for hearing me, and now old Sojourner aint got nothing more to say.Which best describes the effect of these words?They remind the audience that Truth has had rich life experience and offers valuable wisdom.They suggest that the audience has listened to and understood all of Truths reasons.They inform the audience that Truth will not give another speech about womens suffrage.They encourage the audience to question Truths reasoning and the ideas she has put forth. me when i see somthing wrong with this world Which of the following correctly uses absolute value to show the distance between -70 and 13?1) |-70 - 13| = |-83| = -83 units2) |-70 - 13| = |-83| = 83 units3) |-70 + 13| = |-57| = 57 units4) |-70 + 13| = |-57| = -57 units Calculate the slope using Point-Slope Form. Show your work. y - y = m(x - x) (7th grade mathematics) Pls look at the image and help me break it to get it it smaller or I just need help, thank u! If M is a multiple of 9 and 8 then it is a multiple of 72True or False? Lin runs 5 laps around a track in 6 minutes.If Lin runs 21 laps at the same rate, how long does it take her Write the equation of the line in slope-intercept form that goes through the points: (3, 5) and (-1, -3) Yo! Wsp Brainly Squad Can ya help me with 61393THANKS! Find x so that the triangle shown below is a right triangle. Trapezoid EFGH ~ trapezoid MNOP. Find the value of y.answers in the picture Juan decided to start saving for college. He deposited $500 into an account which earns 4% simple annual interest. At the end of each year, he will add $250 to this account. How much will he have in his account after the end of three years? Types of Balance in ArtLook at the artwork below and write out how you believe balance/symmetry was created. List other objects that share this kind of balance/symmetry. Help please!!!! real answers please need it in 1 hour. Kyung works 5 hours at a restaurant each Wednesday. He also earns $37 a week delivering newspapers. Kyung makes a total of $79.50 each week. If m represents the amount he makes per hour at the restaurant, which equation can be used to find the value of m?5 m + 37 = 79.505 m = 79.5037 m = 79.5037 m + 5 = 79.50 Give the name for the ionic compound NiN Solve 1/6 6 = ___. PLEASE HELP I REALLY NEED HELP Chapters 11-15 summary for each chapter What is the length of side s of the square shown below? 8 90" A. 2 B. 4 C. 8D. 42E. 1F. 82