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In-class Kinetic and Potential Energy

Total questions: 14

Worksheet time: 28mins

Name
Class
Date
1.
When a pendulum swings, at which point is kinetic energy highest?
a)
1
b)
2
c)
3
d)
4
2.

What is the gravitational potential energy (GPE) of a 1 kilogram pumpkin that is 1 meter above the ground?

g = 9.8 m/s2

a)

9.8 Joules

b)

1.0 Joule

c)

0.10 Joule

d)

11.8 m/s2

3.

A cat that weighs 26 N sits on a 2 m tall shelf. How much gravitational potential energy does the cat have?

a)

52 J

b)

13 J

c)

500 J

d)

5.3 J

4.

How high is the witch flying if she has 7350 J of gravitational potential energy and a mass of 50 kg?

a)

15 m

b)

56 m

c)

367500 m

d)

147 m

5.

The 12-foot tall skeleton from Home Depot has a mass of 30 kg and is chasing you at 5 m/s. What is its kinetic energy?

a)

375

b)

750

c)

75

d)

460

6.

A bat is flying at a constant speed of 8.0 m/s. It has a kinetic energy of 12.8 J. What is its mass?

a)

3.2 kg

b)

51.2 kg

c)

2.0 kg

d)

0.4 kg

7.

A 50kg person is running from a zombie and has 1225 J of kinetic energy. What is the person's velocity?

a)

7 m/s

b)

49 m/s

c)

2401 m/s

d)

12 m/s

8.

A 0.40 kg bat is flying at a speed of 8.0 m/s. The bat flies 10 meters above the ground. What is the bat's TOTAL MECHANICAL ENERGY?

a)

12.8 J

b)

1.2 J

c)

39.2 J

d)

52

9.

A ghost flying through the air weighs 1.5 N and has 15 J of potential energy. How high is it flying through the air?

a)

10 m

b)

22.5

c)

0.1 m

d)

16.5 m

10.

A pumpkin sits at the top of a hill. Its potential energy is 1000 J. How much kinetic energy does it have after it rolls half way down the hill?

a)

1000 J

b)

500 J

c)

2000 J

d)

250 J

11.

A pumpkin sits at the top of a hill. Its potential energy is 1000 J. It has a mass of 60 kg. What is the pumpkin's speed when it reaches the bottom of the hill?

a)

33.3 m/s

b)

5.8 m/s

c)

4.1 m/s

d)

16 m/s

12.

The headless horseman's 2 kg pumpkin head fell off at the top of a 40 m tall hill. How much KINETIC energy does his head have 70% of the way down the hill? (ignore friction)

a)

784 J

b)

549 J

c)

235 J

d)

392 J

13.

The headless horseman's 2 kg pumpkin head fell off at the top of a 40 m tall hill. How much POTENTIAL energy does his head have 70% of the way down the hill? (ignore friction)

a)

784 J

b)

549 J

c)

235 J

d)

392 J

14.

What is the mass of a witch that has 100 joules of kinetic energy and is flying at a velocity of 2 m/s?

a)

50 kg

b)

200 kg

c)

25 kg

d)

100 kg