What does the slope on a speed vs. time graph represent

Answers

Answer 1

Answer:

It represents the amount of speed per time or (x) for speed (y) for time so the slope would be like y/x


Related Questions

a car has a mass of 1200 kg. what would be its weight on earth?

Answers

Answer:

11772 N

Explanation:

[tex]\boxed{w = mg}[/tex]

w= weight

m= mass

g= acceleration due to gravity

The acceleration due to gravity on earth is 9.81m/s².

Substitute m= 1200 and g= 9.81 into the formula:

w= 1200(9.81)

w= 11772 N

remember since they are asking the weight there is always gravity its 9.8m/s but approximately its 10m/s

a train has an initial velocity of 44m/s and an accelaration of _4m/s calculate its velocity​

Answers

Answer:

It's 4m/s

Explanation:

V = u _ at, at u = 44m/s

44 + [-4]10

4m/s

Bob the Builder is making a delivery of wood in his work truck. He is traveling at the velocity of 12 mi/hour at the top of the hill. Nine seconds later he reaches the bottom of the hill and is moving north at 25 mi/hour. What is the acceleration?

Answers

Answer:

Acceleration, a = 0.65m/s² due North.

Explanation:

Given the following data;

Initial velocity = 12mi/hr

Final velocity = 25mi/hr

Time = 9 secs

To find the acceleration;

First of all, we would convert miles per hour to meters per seconds.

[tex] Initial \; velocity = \frac {12 * 1609.344}{60*60} = \frac {19312.128}{3600} = 5.37m/s [/tex]

[tex] Final \; velocity = \frac {25 * 1609.344}{60*60} = \frac {40233.6}{3600} = 11.18m/s [/tex]

Now to find the acceleration;

Mathematically, acceleration is given by the equation;

[tex]Acceleration (a) = \frac{final \; velocity - initial \; velocity}{time}[/tex]

Substituting into the equation, we have;

[tex]a = \frac{11.18 - 5.37}{9}[/tex]

[tex]a = \frac{5.81}{9}[/tex]

Acceleration, a = 0.65m/s² due North.

A scientist uses different types of gasoline in the engines of three identical
cars. She measures how far the cars go before running out of gas. What is
the controlled variable in this experiment?
A. The type of gas the cars are given
B. The distance the cars go
C. The amount of gas the cars are given
D. The type of cars that are used

Answers

Answer:

the types of gas the car is given

Explanation:

All three cars are identical and have different gas in each car so she is trying to determine how each car will react with different gasoline.

•1. Identify the four inner/terrestrial planets.

Answers

Answer:

1) Mercury

2) Venus

3) Earth

4) Mars

Explanation:

Answer:

The for inner/terrestrial planets are Mercury, Venus, Earth and Mars

Explanation:

                            ~Notify me if you have questions~

                           Have a nice day and I hope it helps!

                                                       ^ω^

-- XxFTSxX

Help !!!!!!!!
Please its Urgent.

Answers

None can.

A clinical thermometer only measures temperatures above +30°C.

Mercury and alcohol are both frozen solid at -50°C.

A spaceship is traveling at 24,000 m/sec. At T=5 sec, the rocket trusts are turned on. At T=55 sec, the spaceship reaches a speed of 29,500 m/sec. Whats the spaceships acceleration?

Answers

Answer:

480m/s²

Explanation:

Acceleration is the change in velocity of a body with respect to time;

Acceleration = change in velocity/change in time

change in velocity = 29,500 - 24,000

change in velocity= 5,500

Change in time = 55 - 5

change in time = 50secs

Substitute into the formula;

spaceships acceleration = 24000/50

spaceships acceleration = 480 m/s²

Hence the spaceships acceleration is 480m/s²

A plane flew at a speed of 600 km/hr for a distance of 1500 km,
How long did take to get to its destination

Answers

Explanation:

600 ÷ 60 = 10

1500 ÷ 10 = 150 minutes

I don't know how you should express the answer in:

So it's either 150 minutes or 2 hours and 30 minutes.

(This is kind of like mathematics, not physics)

What is the volume of a liquid in a 50 mL cup?
A. 50mL
B. 10mL
C. There is not enough information to answer this question.

Answers

Answer:

there is not enough information

which of the following is an example of thermal energy being transferred directly from one substance to another via conduction?

Answers

Answer:I think it’s D

Explanation:

Conduction needs direct touch to transfer

I need the answers ASAP.

Answers

Answer:

Explanation:

A) Large: As she opens her parachute, she begins to displace a large volume of air. This leads to a Large air resistance

B) increase, weight: As she falls, the air resistance force increases. Now there is a force acting in opposite directions to her weight.

C)Weight, Decelerate: The skydiver has only the downward force of her weight pulling down on her, so she starts to decelerate

D) Weight, Upward, Resultant:

Her weight is now equal to the upward force from the ground. Her resultant  force is then zero

E) Increases, same, constant,  resultant, terminal:

As she accelerates faster, the air resistance force increases. It is now the same as her weight. She now moves at a constant speed because the resultant force acting on her is zero. She is now at her terminal velocity.

F) Increases, same, constant, terminal:

As she decelerates, the air resistance force on her parachute increases until it is the same as her weight. She is now moving with a constant speed until she hits the ground - a new slower terminal velocity

You fill a car with gasoline. The car now has... ( what energy)

Answers

Answer:

Chemical Potential Energy Energy

Energy is the capacity for doing work or supplying heat. When you fill your car with gasoline, you are providing it with potential energy. Chemical potential energy is the energy stored in the chemical bonds of a substance.J

Explanation:

find the cp of an article which is sold for rupees 4048 , thereby , making a profit of 15 percent​

Answers

Answer:

4048 = 115x/100.

Explanation:

Profit P = (15/100) X x.

P= 15x/100.

15x/100 = 4048- x.

4048 = 15x/100 + x.

4048 = 115x/100.

A piece of glass weights 25 g in air, 16.77g in water at 4C and 16.89g in water at 60C. Find the mean coefficient of cubical expansion of water between 4C anf 60C, taking the coefficient of linear expansion of glass as 8*10^6​

Answers

sorry i think so i dont exactly know i am sorry

Explanation:

As a certain amount of water is cooled from room temperature until it reaches 4 °C, its volume drops. The density reduces as the volume increases below 4 °C. Therefore, water's greatest density occurs at 4 degrees Celsius.

What coefficient of cubical expansion of water?

Water has an unusual trait called anomalous expansion, which causes it to enlarge rather than compress when the temperature drops from 4 °C to 0 °C, and it becomes less dense.

At temperatures not far below zero degrees Celsius, water ice is unique for having low coefficients of static and dynamic friction that range from 0.04-0.02, but as the temperature drops, these numbers rise.

Therefore, When a metal sheet's temperature rises by one degree, its coefficient of area expansion is calculated as the increase in surface area per unit of original surface area.

Learn more about coefficient here:

https://brainly.com/question/4709470

#SPJ2

Find the density of a solid object whose mass is 315g, given that its length is 7cm,
width is 3cm and height is 5cm. b) State the unit for measuring density.
Thanks for helping

Answers

Answer:

Density is the mass of an object divided by its volume. ... Density often has units of grams per cubic centimeter ... Density is not something that is directly measured.

Explanation:

given

mass (m) = 315 g

length (l) = 7 cm

width (b) = 3 cm

height (h) = 5 cm

Now

volume (v) = l * b * h

V = 7 * 3 * 5

V = 105 cm³

Density (d) = ?

We know

density is defined as mass per unit volume so

d = m / v

d = 315 / 105

d = 3 g/cm³

Therefore density = 3 g/cm³

Note

If the question is asked to write in SI unit of density then u have to write the unit of density as kg/m³

Hope it will help :)

The PE of the box that is on a 2.0 m high self is 1600 J. What is the power expelled to lift the box to this height in 10.0 seconds?

Answers

Answer:

  160 W

Explanation:

Power is the ratio of work to time:

  (1600 J)/(10 s) = 160 J/s = 160 W

velocity of sound in solid is more than that in liquid.why?​

Answers

Velocity of sound travels faster in solids than in liquids, and faster in liquids than in gases because "the density of solids is higher than that of liquids, meaning that the particles are closer together."

Answer:

Explanation:

Due to the fact that sound is caused by vibrations, it's more noticeable in liquid because the vibrations may cause ripples in the liquid

Body Systems Directly Involved (Give at Least 2)
Cartoon
13. Ouch! You step on a tack and jump away without even thinking. Then you decide to pick up the tack and place it back in a desk drawer.
I need the second one the nervous system and...

Answers

Answer:

Nervous system and immune system

Explanation:

The nervous system is involved because you immediately jumped away, that ur brain and nerves initiating the fight or flight response. The immune system is involved because the tack most likely pierced your skin, so your immune system needs to work to make sure the wound does not get infected.

1. How much heat must be absorbed by 375 grams of water to raise its
temperature by 25° C?(Cp of water is 4.184)

Answers

Answer:

39225J

Explanation:

Given parameters:

Mass of water  = 375grams of water

Change in temperature  = 25°C

Specific heat capacity of water  = 4.184J/g°C

Unknown:

Amount of heat absorbed  = ?

Solution:

To solve this problem, we use the expression below:

      H  = m c Ф  

H is the heat absorbed

m is the mass

c is the specific heat capacity

Ф is the change in temperature

  Insert the parameters and solve;

      H  = 375 x 4.184 x (25) = 39225J

A box weighs 1300 N. When a horizontal force of 390 N has applied the box accelerates at 1.3 m/s2. What is the magnitude of the frictional force?

Answers

Answer:

Ffriction = 217.7[N]

Explanation:

First, we must find the mass of the box, we must remember that the weight is defined as the product of the mass by acceleration.

[tex]w=m*g[/tex]

where:

w = weight [N] (units of Newtons)

m = mass [kg]

g = gravity acceleration = 9.81 [m/s²]

[tex]1300=m*9.81\\m=132.51[kg][/tex]

Now we must use Newton's second law, which tells us that the sum of forces is equal to the product of mass by acceleration.

∑F = m*a

where:

∑F sum of forces

m = mass = 132.51[kg]

a = acceleration = 1.3[m/s²]

We must know that the forces that act are the horizontal force that moves the box and the friction force in the negative direction that acts against the movement.

Now replacing:

[tex]390-f_{friction}=132.51*1.3\\390-172.26=f_{friction}\\f_{friction}=217.7[N][/tex]

If Bert the Bat travels East at 200 meters in 10 seconds, what is his velocity?

Answers

Answer:

20m/s due east

Explanation:

Given parameters:

Displacement eastward  = 200m

Time  = 10s

Unknown:

Velocity  = ?

Solution:

Velocity is the displacement divided by time;

    Velocity  = [tex]\frac{displacement}{time}[/tex]  

 Velocity  = [tex]\frac{200}{10}[/tex]    = 20m/s due east

A mass of 2.8 kg lies on a frictionless table,
pulled by another mass of 4.9 kg under the
influence of Earth's gravity.
The acceleration of gravity is 9.8 m/s2.
2.8 kg
4.9 kg
What is the magnitude of the acceleration
a of the two masses?
Answer in units of m/s2.

Answers

Answer:

17.15 m/s²

Explanation:

The formula for force is ;

F= m*a   where m is mass of object 1 and a is acceleration due to gravity

The force, F , used in pulling the mass is ;

4.9 * 9.8 =48.02 N

Applying the formula for force to get acceleration

F= m*a

48.02 = 2.8 * a

a= 48.02 / 2.8

a= 17.15 m/s²

What is your average speed if you walk 2 kilometers in 20minutes

Answers

Answer:

12 km/hr

Explanation:

Speed= Distance/Time

Answer:

12km/h

Explanation:

average speed= Distance covered /time taken

average speed=2km/20minutes

=but 1 minutes is 60 seconds

=2km/60minutes

=12km/h

The radius of a planet is 2400 km, and the acceleration due to gravity at its surface is 3.6 m/s2.
What is the mass of the planet?

Answers

Answer:

[tex]3.1\cdot10^{23}\:\mathrm{kg}[/tex]

Explanation:

We can use Newton's Universal Law of Gravitation to solve this problem:

[tex]g_P=G\frac{m}{r^2}[/tex]., where [tex]g_P[/tex] is acceleration due to gravity at the planet's surface, [tex]G[/tex] is gravitational constant [tex]6.67\cdot 10^{-11}[/tex], [tex]m[/tex] is the mass of the planet, and [tex]r[/tex] is the radius of the planet.

Since acceleration due to gravity is given as [tex]m/s^2[/tex], our radius should be meters. Therefore, convert [tex]2400[/tex] kilometers to meters:

[tex]2400\:\mathrm{km}=2,400,000\:\mathrm{m}[/tex].

Now plugging in our values, we get:

[tex]3.6=6.67\cdot10^{-11}\frac{m}{(2,400,000)^2}[/tex],

Solving for [tex]m[/tex]:

[tex]m=\frac{2,400,000^2\cdot3.6}{6.67\cdot 10^{-11}},\\m=\fbox{$3.1\cdot10^{23}\:\mathrm{kg}$}[/tex].

How far will a car travel in 30 seconds at 12 m/s​

Answers

Answer:

30*12=360m,it would travel 360 m.

360m hope this helps

Un avión da "una vuelta mortal" de radio R = 500 m con una celeridad constante v = 360 km/h. Halla la fuerza ejercida por el asiento sobre el piloto, si su masa es m = 70 kg, en las partes inferior y superior de la trayectoria circular.

Answers

Answer:

1400 N

Explanation:

Verá, durante el salto mortal, el piloto se mueve en una trayectoria circular y la fuerza que actúa sobre él es una fuerza centrípeta.

Sea la fuerza centrípeta F, la masa del piloto (m) = 70 Kg, el radio (r) = 500 my la velocidad (v) = 360 km / hr * 1000/3600 = 100 m / s

F = mv ^ 2 / r

F = 70 * (100) ^ 2/500

F = 1400 N

A lift travelling up to the top floor of the Empire State building with a mass of 4200kg and a kinetic energy of 4116J. Find the velocity

Answers

Answer:

1.4 m/s

Explanation:

The velocity can be found by using the formula

[tex]v = \sqrt{ \frac{2k}{m} } \\ [/tex]

k is the kinetic energy

m is the mass

From the question we have

[tex]v = \sqrt{ \frac{2 \times 4116}{4200} } \\ = 1.4[/tex]

We have the final answer as

1.4 m/s

Hope this helps you

Answer:

The speed of the lift is 1.4 m/s

Explanation:

Kinetic Energy

Is the type of energy of an object due to its motion. It's proportional to the square of the speed and the mass.

The equation for the kinetic energy is:

[tex]\displaystyle K=\frac{1}{2}mv^2[/tex]

Where:

m = mass of the object

v = speed at which the object moves

The kinetic energy is expressed in Joules (J)

It's given the mass of the lift as m=4,200 kg and its kinetic energy K=4,116 J. To calculate the speed (magnitude of velocity), we solve the formula for v as follows:

[tex]\displaystyle v=\sqrt{\frac{2k}{m}}[/tex]

[tex]\displaystyle v=\sqrt{\frac{2*4,116}{4,200}}[/tex]

[tex]\displaystyle v=\sqrt{1.96}[/tex]

v = 1.4 m/s

The speed of the lift is 1.4 m/s

10.
A simple pendulum set into vibration
completes an oscillation in time T. If
the length of the pendulum is
increased to 9 times its original
length, the new period of oscillation in
terms of T will be
А. 18.0 T
B. 9.0 T.
C. 4.5 T.
D 3.0 T
E. 0.1 T.​

Answers

Answer:

The new period of oscillation is D) 3.0 T

Explanation:

Simple Pendulum

A simple pendulum is a mechanical arrangement that describes periodic motion. The simple pendulum is made of a small bob of mass 'm' suspended by a thin inextensible string.

The period of a simple pendulum is given by

[tex]T=2\pi \sqrt{\frac{L}{g}}[/tex]

Where L is its length and g is the local acceleration of gravity.

If the length of the pendulum was increased to 9 times (L'=9L), the new period of oscillation will be:

[tex]T'=2\pi \sqrt{\frac{L'}{g}}[/tex]

[tex]T'=2\pi \sqrt{\frac{9L}{g}}[/tex]

Taking out the square root of 9 (3):

[tex]T'=3*2\pi \sqrt{\frac{L}{g}}[/tex]

Substituting the original T:

[tex]T'=3*T[/tex]

The new period of oscillation is D) 3.0 T

(a) Explain the advantage of using a plane mirror in optical testing.
explain your answer ​

Answers

Answer: Optical test is a test which is used to assess vision and ability of the person to focus on the objects.

Explanation:

The following are the advantages of utilizing plane mirror in optical testing:

1. When a plane mirror is used for testing the image of the test card must be placed at distance equal to the distance of the object.  

2. Larger distance in between the object or test card and viewer is obtained. This can help in determining the exact ability of the eye to focus on objects.

.A water tank has dimensions
of 6m x 4m x 4m. Find the pressure exerted by
water at the base of dam when it is half
filled. ( Density of water - 1000 kg/ m2,
acceleration
due to to gravity is 9.8m/s2

Answers

Answer:

9800Nm⁻²

Explanation:

Given parameters:

Dimensions of the water tank = 6m x 4m x 4m

Density of water  = 1000kgm⁻³

Gravity  = 9.8m/s²  

Unknown:

Pressure exerted by the water at the base of the dam  = ?

Solution:

The pressure exerted by the water is given as:

  Pressure  = density of water x acceleration due to gravity x height of water

The height of the water here is half = 1m

   

Pressure  = 1000 x 9.8 x 1 = 9800Nm⁻²

Other Questions
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