WorksheetsWork and Gravitational Potential Energy
Total questions: 20
Worksheet time: 16mins
At which point does the ball has the greatest gravitational potential energy (GPE)?
A
G
D
C
G
How could you increase the gravitational potential energy of an object without changing its mass or the planet's gravitational force.
Make the object larger
Lower the object towards the ground
Raise the object farther off the ground
Allow the object to roll on the ground
Which is the correct unit for expressing gravitational potential energy?
Joule
Newton
m/s2
meter
When an object gains graviational potential energy what objects should be in the system.
the object being lifted
The object being lifted and the object doing the lifting
The object being lifted and the earth
The object being lifted, the object doing the lifting, and the earth
An object is being lifted 2m with a force of 25N exerted upwards on the object. How much work is being done on the object?
50J
25J
-50J
0J
Work is always done by ____________
A person
An object outside the system
An object inside the system
The Earth
Which of these scenarios is the most work done?
A crane does work by lifting a steel beam exerting 5000N of force lifting it 5m off the ground.
A person does work on a shopping cart by exerting a force 12N down the 10m long isle.
A truck does work as it pulls a trailor exerting a force of 100N over 1000m as it drives down the road.
An elevator does work by lifting some passengers up in a building exerting 3000N of force lifting them 8m.
Which object has the most graviational potential energy?
A 1000kg car lifted 0.02m off the ground.
A 0.5kg baseball 20m off the ground
A 75kg weight lifted 1m off the ground
A 12kg crate 3m off the ground.
A person lifts a 25kg weight off the ground 0.5m
System: The Weight, Earth
What type of work did the person do?
Positive Work
Negative Work
No work
The person lowers a 25kg weight back down to the ground 0.5m.
System: The Weight, Earth
What type of work did the person do?
Positive Work
Negative Work
No work
The person raises the 25 kg weight to put it up on a 2m high shelf.
System: The Weight, Earth
What type of work did the person do?
Positive Work
Negative Work
No work
The person moves the 25kg from a 2m high shelf on one side of the gym to a 2m shelf on the opposite side of the gym 10m away.
System: The Weight, Earth
What type of work did the person do?
Positive work
Negative work
No work
At which point on the roller coaster is the gravitational potential energy the greatest?
W
X
Y
Z
If you push a cart with a force of 60 N for 2 m... how much work have you done?
120 J
30 J
120 N
30 N
A major league pitcher can throw a baseball with a kinetic energy of 150 J. How much work must the pitcher do to the ball to give it that much KE?
150 J
0
Can’t tell without knowing the mass of the ball
Which object will have the largest Gravitational Potential Energy?
An object's gravitational potential energy store can be increased by...
by lifting the object higher
increasing the velocity (speed) of the object
decreasing the size of the object
decreasing the mass of the object
An Olympic high jumper, with a mass of 82 kg, has a maximum gravitational potential energy of 1970 J. How high was the jump?
Let g = 9.8N/kg
24 m
161,540 m
2.5 m
201 m
The world record for pole vaulting is 6.15 m. I the pole vaulter’s gravitational potential energy is 4942 J, what is his mass?
Let g = 9.8N/kg
803.6 kg
504.3 kg
30,393.3 kg
82 kg
