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Total questions: 25

Worksheet time: 28mins

Name

Class

Date

Energy in the form of motion.

mechanical energy

potential energy

kinetic energy

momentum

Stored energy in the form of position or condition.

potential energy

kinetic energy

momentum

mechanical energy

A soccer player kicks a ball with 20 Newtons of force causing it to travel 100 meters. How much work is done on the ball?

200 J

80 J

5 J

2000 J

A worker climbs a ladder and does 8 J of work on a 2 N object. What is the distance they lift the object?

18 m

4 m

10 m

6 m

At which point of this roller coaster is the energy 1/2 kinetic and 1/2 potential?

How much work is being done with 200 N of force over 426 meters?

85,200 J

45,620 J

90,480 J

62,329 J

The faster an object moves, the ________ kinetic energy it has.

less

none of the above

all of the above

If there is no friction on this track, at which point would the coaster have the most kinetic energy?

A 40-kg person is climbing 3 m up a flight of stairs in 6 seconds. How much power did they exert climbing the stairs?

400 W

1200 W

200 W

120 W

10.

The SI unit of work is?

Joules

Watts

Newtons

meters

11.

Gravitational potential energy depends on the ________ and ________ of the object.

Height and mass

Friction and movement

Mass and Movement

Height and Friction

12.

What is the equation to calculate work when force and displacement are in the same direction?

$W=P\left(A\times d\right)$

$W=P\Delta V$

$W=Fd\cos\left(\theta\right)$

$W=F\cdot d$

13.

Which of the following is an example of negative work?

Lifting a box

Ball falling down

Car braking

Water turbine spinning

14.

What are the conditions for work to be done?

A force must be applied to the object

The object must be displaced in the same direction as the force

Both A and B

Neither A nor B

15.

A soccer player kicks a ball with 20 Newtons of force causing it to travel 100 meters. How much work is done on the ball?

200 J

80 J

5 J

2000 J

16.

How much work is done in holding a 15 N sack of potatoes while waiting in line at the grocery store for 3 minutes?

15 J

45 J

0 J

5 J

17.

What is the unit for work?

Joules

Newton

Watts

18.

Which of the given pictures shows that work can not done?

19.

A worker climbs a ladder and does 8 J of work on a 2 N object. What is the distance they lift the object?

18 m

4 m

10 m

6 m

20.

A boy pushes on a parked car with a force of 250N. The car does not move. How much work does the boy do?

250J

250N

2500J

21.

A boy exerts an average force of 68N when he lifts a box 1.1m. How much work does he do?

74.8J

733.79J

61.82J

7.62J

22.

A 2 kg object is held 5 meters above the ground. What is the gravitational potential energy of the object?

5 J

10 J

20 J

100 J

23.

A weightlifter presses a 400N weight 0.6m over his head in 2s. What is the power of the weightlifter?

120W

1200W

200W

240W

24.

A 50.0 kg wolf is running at 10.0 m/s. What is the wolf's kinetic energy?

1500 J

2.250 J

2500 J

3500 J

25.

How high must a 20kg box be lifted to give it 784J of potential energy?

3.98 km

392 m

3.92 m

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Total questions: 25

Worksheet time: 28mins

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