Free Printable Work/Energy Theorem

1.

45 J of work were done on the object that moved 5 meters. How much force was applied to the object?

a)

8 N

b)

225 N

c)

9 N

d)

0 N

2.

A 10.0 kg box is accelerated from 2.0 m/s to 4.0 m/s. What is the amount of work needed to accelerate the box?

a)

50 J

b)

60 J

c)

20 J

d)

45 J

3.

What are the units for Work?

a)

Newtons

b)

Kilograms

c)

Joules

d)

Moles

4.

What is the equation for Kinetic Energy (KE)?

a)

$KE\ =\ 2mv^2$

b)

$KE\ =\ 2mv$

c)

$KE\ =\ mv^2$

d)

KE\ =\ \frac{1}{2}mv^2

5.

Work can also be shown as

W\ =\ \Delta KE

How do you find

\Delta KE

?

a)

$KE_i\ -\ KE_f$

b)

$KE_f\ -\ KE_i$

c)

$KE\ +\ KPOP\ =\ BbyMtl$

d)

$42?$

6.

For an object sliding on the ground, the friction force

a)

always acts in the same direction as the displacement

b)

always acts in a direction perpendicular to the displacement

c)

always acts in a direction opposite to the displacement.

d)

acts either in the same direction as the displacement or in the

direction opposite to the displacement depending on the value of the coefﬁcient of kinetic friction.

7.

Which of the following statements are true about potential energy?

a)

Both gravitational and elastic potential energy are dependent upon the speed of an object.

b)

Moving objects cannot have potential energy.

c)

None of these

d)

Potential energy is the energy stored in an object due to its position.

8.

Which Equation matches:

"An object slides down a frictionless ramp."

a)

PE = KE

b)

W = PEel

c)

PE −W = KE

d)

W = PE

9.

Which Equation matches:

"A moving object is stopped."

a)

PE = KE

b)

W = PEel

c)

PE −W = KE

d)

KE −W = 0

10.

What is the ΔKE of a baseball hit with a force of 6000 N that travels 120 m across the field?

a)

6000J

b)

43560000J

c)

720000J

d)

50J

11.

Match the following

a)

inclined plane

1.

a simple machine consisting of a slope

b)

input work

2.

effort force multiplied by the distance over which it is applied

c)

joule

3.

the metric unit for work and energy; equal to 1 newton meter (N∙m)

d)

kinetic energy

4.

energy of motion

e)

law of conservation of energy

5.

states that energy is neither created nor destroyed

12.

The energy of motion is...?

a)

Mechanical

b)

Potential

c)

Kinetic

d)

Infinite

13.

A force exerted over a distance to move an object is the definition of _________.

a)

power

b)

work

c)

momentum

d)

Watt

14.

The law of conservation states that we cannot ________ any more energy and when we use energy, it is not ________ , only ____________.

a)

destroyed

b)

create

c)

changed/transformed

1)

2)

3)

15.

At which point on the roller coaster is the kinetic energy at its maximum?

a)

A

b)

B

c)

C

d)

D

16.

A 70 kg runner starts a race from rest, he then runs a perfect circle track and ends the race at rest. Did he do work?

a)

Yes

b)

No

17.

A person is pushing a 10 kg shopping cart at a velocity of 5 m/s. They increase their speed to 7 m/s to get around someone and then keep going that velocity. Overall, was work done on the shopping cart?

a)

Yes

b)

No

18.

A person pushed a 10 kg shopping cart at a velocity of 5 m/s. They slow down to 3 m/s to look through the aisle, and then increase back up to 5 m/s. Overall, was work done on the shopping cart?

a)

Yes

b)

No

19.

A car that has a mass of 200 kg is moving at 35 m/s. There is a total of 37,500 J of work done on the car, what is the final kinetic energy of the car?

a)

160,000 N

b)

160,000 J

c)

122,500 N

d)

122,500 J

Work/Energy Theorem

Total questions: 19

Worksheet time: 28mins

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