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Worksheetspractice test on KE, PE and Work
Total questions: 37
Worksheet time: 1hrs 14mins
What type of energy is possessed by a moving object?
chemical energy
potential energy
kinetic energy
sound energy
A roller coaster sitting at the highest point of its track has what type of energy?
kinetic energy
potential energy
sound eergy
electrical energy
Calculate the potential energy of a book that has a mass of 0.25 kg and is 2 m high.
(PE = mass × g × height)
(g = 9.8 m/s/s)
49 J
4.9
1321 J
4.9 J
Calculate the potential energy (PE) of dog that has a mass of 12 kg and is 3 m high
(PE = mass × g × height)
g = 9.8 m/s/s
352.8
12 J
352.8 J
12
Calculate the kinetic energy (KE) of a dog that has a mass of 15 kg and is running with a velocity of 7 m/s
(KE = 0.5 × mass × velocity2)
367.5 J
367.5
18928 J
18928
Calculate the kinetic energy (KE) of a dog that has a mass of 15 kg and is running with a velocity of 7 m/s
(KE = 0.5 × mass × velocity2)
367.5 J
367.5
18928 J
18928
Energy is often lost during energy transformation. The lost energy is called
useful energy
useless energy
heat energy
wasted energy
What kind of energy is in a person climbing a ladder?
Potential
Kinetic
Both
None
This ball sits at the top of the hill and later gets pushed down. For letter A on this diagram, how much KINETIC energy does the ball have? Answer with a NUMBER, not a word.
(a)
This ball sits at the top of the hill and later gets pushed down. For letter B (halfway down) on this diagram, how much POTENTIAL energy does the ball have? Answer with a NUMBER, not a word.
(a)
PE
KE
Object A has a mass of 1 kg and a speed of 2 m/s. Object B has a mass of 2 kg and a speed of 1 m/s. Objects A and B have the same kinetic energy.
True
False
If the mass of a moving object is doubled, then its kinetic energy will be doubled as well.
True
False
W= 125 J
d = 10 m
F = ???
12.5 N
1250 N
0.08 N
135 N
If 250 Joules of work is needed to move a box 10 meters, what force was used?
25 Joules
25 Newtons
2,500 Joules
2,500 Newtons
W= 125 J
d = 10 m
F = ???
12.5 N
1250 N
0.08 N
135 N
What is the KE of a football which has a mass of 0.8 kg and is kicked at a velocity of 10m/s?
80 J
3.2 J
160 J
40 J
What is the kinetic energy of a zorb and human with a total mass of 90Kg rolling at 10m/s?
3,700J
900J
4,500J
6,500J
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?
1890 J
3780 J
945 J
31.5 J
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?
500J
50J
4,905 J
49.05J
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?
4,410,000 J
450,000 J
55.56 J
0.018 J
Devon is playing with a yo-yo. A yo-yo has an axle in the middle of two plastic halves. A string is tied around this axle. As Devon moves his hand, the yo-yo goes up and down. The yo-yo converts potential energy to kinetic energy as it moves.
Which of the following pictures represents the yo-yo with the most potential energy?
An asteroid is falling toward planet Earth from space. It has a height of 100,000 km.
As the asteroid falls closer to the Earth's surface, its _______ energy decreases and its _______ energy increases.
chemical; heat
kinetic; gravitational potential
heat; chemical
gravitational potential; kinetic
In which of these is work being done?
a child rolling a ball up a hill
a horse pulling a buggy
a mother pushing her baby on a swing
all of these
Clyde and Marilyn are riding a roller coaster. During which section(s) of the track is their kinetic energy converted to potential energy?
from point B to point D only
from point A to point B and from point C to point D
from point A to point B only
from point B to point C only
There is a bell at the top of a tower that is 45 m high. The bell has a mass of 19.39 kg. The bell has _____________________ energy. Calculate it. (g = 9.8)
kinetic, 8,459 J
kinetic, 19,632 J
potential, 8,551 J
potential, 872.55 J
You serve a volleyball with a mass of 2.1 kg. The ball leaves your hand with a speed of 30 m/s. The ball has ______________________ energy. Calculate it. (g = 9.8)
kinetic, 945 J
kinetic, 900 J
potential, 617 J
potential, 66 J
You serve a volleyball with a mass of 2.1 kg. The ball leaves your hand with a speed of 30 m/s. The ball has ______________________ energy. Calculate it. (g = 9.8)
kinetic, 945 J
kinetic, 900 J
potential, 617 J
potential, 66 J
