WorksheetsGravitational Potential Energy Review
Total questions: 10
Worksheet time: 32mins
Which of the following is not a factor in PEg?
Acceleration due to gravity.
The height of an object.
The speed of travel of an object.
The mass of an object.
Why do object not have PEg in space?
Because their mass is zero.
Because gravity is zero.
This is false, objects always have PEg.
A 20 kg box is lifted 6 m above the ground. How much PEg does it have?
120 J
200 J
1200 J
60 J
A ball is elevated some distance off the ground. If it has a mass of 3 kg and a potential energy of 90 J, how high off the ground is the ball?
2700 m
27 m
900 m
3 m
What happens to the PEg of a rock that sits on the edge of a cliff as it starts to fall?
The rock loses PEg and gains KE.
The rock loses KE and gains PEg.
The rock retains all its PEg and gains KE
The rock retains both PEg and KE
Which of the following statements is implied by the law of conservation of energy?
Energy is static and unchanging.
Energy only ever transforms or transfers.
Energy will eventually run out.
None of these.
Which statement is most true of the term "g" in PEg?
It is the letter used to denote gravity.
It is the letter used to denote the speed of an object.
It is the letter used to denote the acceleration of an object that is caused by gravity.
It does not form part of the equation for PEg.
A leaf has fallen off a tree and hit the floor of the woods. Why is PEg = 0 J ?
The leaf is no longer being acted upon by gravity.
The leaf no longer has any height off the ground.
The leaf no longer has any mass.
The leaf does not have 0 J of PEg.
A 50 kg jogger jumps 1.6 m off the ground. How much energy did they use to do this?
80 J
500 J
160 J
800 J
On the moon, g = 1.6 m/s^2. A basketball has a mass of 0.6 g and the basketball hoop is usually 3 m above the ground. Assuming you want to use the SAME AMOUNT OF ENERGY AS ON EARTH, at what height would you have to put the hoop on the moon?
About 19 m.
About 3 m
About 5 m
About 2 m
