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PE/KE Math Practice

Total questions: 20

Worksheet time: 29mins

Name
Class
Date
1.

What is the formula for Gravitational Potential Energy?

a)

PE = mgh

b)

KE = 1/2mv2

c)

W = Fd

d)

P = W/t

2.

What is the formula for Kinetic Energy?

a)

PE = mgh

b)

KE = 1/2mv2

c)

W = Fd

d)

P = W/t

3.

What is the KE of a football which has a mass of 0.8 kg and is kicked at a velocity of 10m/s?

a)

80 J

b)

3.2 J

c)

160 J

d)

40 J

4.

What is the kinetic energy of a zorb and human with a total mass of 90Kg rolling at 10m/s?

a)

3,700J

b)

900J

c)

4,500J

d)

6,500J

5.

What is the kinetic energy of a 4kg shotput thrown with a velocity of 13m/s?

a)

676 J

b)

3.25 J

c)

17J

d)

338 J

6.

An explosion of gas from a Hawaiian volcano blows a rock into the sky. The rock has 2000J of kinetic energy. What was its mass if the rock had a velocity of 20m/s?

a)

200Kg

b)

20,000Kg

c)

10Kg

d)

200Kg

7.

You serve a volley ball with a mass of 2.1 kg. The ball leaves your hand with a speed of 30m/s. How much kinetic energy does the ball have?

a)

1890 J

b)

3780 J

c)

945 J

d)

31.5 J

8.

A golf pro swings his driver which has a mass of 0.75Kg at a velocity of 60 m/s. Calculate the kinetic energy of the club.

a)

2700 J

b)

16.9 J

c)

1350 J

d)

45 J

9.

A rabbit with a mass of 3kg walks at a speed of 0.5m/s. Calculate its kinetic energy.

a)

0.5 J

b)

0.75 J

c)

0.255 J

d)

0.375 J

10.

An explosion of gas from a Hawaiian volcano blows a rock into the sky. The rock reaches 100 meters in height. It has a mass of 5 kg. How much potential energy does the rock have before it begins falling back to earth?

a)

500J

b)

50J

c)

4,905 J

d)

49.05J

11.
Roger Federer’s tennis ball has a mass of 0.3 kg. If he holds the ball above the ground at a height of 2.0 m to serve, what is its gravitational potential energy (GPE)?
a)
5.88 J
b)
0.6 J
c)
6.67 J
d)
0.15 J
12.
A leopard with a mass of 55.00 kg climbs 12.0 m up a tree. What is its GPE?
a)
6,468 J
b)
660 J
c)
4.58 J
d)
0.22 J
13.

An aircraft is taking a group of skydivers up into the air. Evan is dressed in his parachuting outfit, which brings his mass to a total of 90.0 kg. The aircraft takes the group to a height of 5000m before the jump. How much GPE does Evan have before jumping?

a)

4,410,000 J

b)

450,000 J

c)

55.56 J

d)

0.018 J

14.
With all of his Batgear on, Batman has a mass of 90.7 kg. How much potential energy does he have if he's perched on top of a 1,575 m building? 
a)
142,852.5 J
b)
1,399,954.5 J
c)
0.058 J
d)
17.36 J
15.
When the astronauts of Apollo 11 landed on the moon, they planted a flag that has a mass of 2.5 kg. How much GPE did the flag have when it was 8 m of the surface of the moon? Gravity there is 1.622 m/s2.
a)
20 J
b)
12.33 J
c)
32.44 J
d)
5.19 J
16.
A 3 kg bowling ball is lifted 1.5 m off the ground. What is its GPE?
a)
4.5 J
b)
2 J
c)
44.1 J
d)
0.5 J
17.

A crate with a mass of 15.3 kg is pulled 9.2 m up in order to place it on top of a shelf. Calculate the GPE of the crate.

a)

140.76 J

b)

1.66 J

c)

1,379.4 J

d)

5.89 J

18.
What is the GPE of a 0.15 kg baseball once it reaches the apex of its motion at 18 m above the ground?
a)
26.46 J
b)
2.7 J
c)
120 J
d)
1,176 J
19.
A child with a mass of 13.6 kg is sitting atop a 3.5 m slide. How much GPE does the child have?
a)
47.6 J
b)
3.89 J
c)
38.08 J
d)
466.48 J
20.
Gravity on Jupiter is 24.79 m/s2. If a 5 kg box is 32 m above the surface of Jupiter, calculate the GPE of the box.
a)
160 J
b)
3,966.4 J
c)
158.66 J
d)
6.45 J