The document poses several physics questions involving potential energy (PE), kinetic energy (KE), and comparisons of energy between different objects. It asks for calculations regarding the PE of books at various heights and the KE of a moving roller coaster, boy, father, and a boat. These questions are aimed at understanding the principles of energy in different scenarios.

1. 1. What is the
PE of a 10 N
book that is
placed on a

2. shelf that is 2.5
meters high?
2. Determine the
amount of PE of a
5.0 N book that is

3. moved to a height
of 1.5 m.
3. Determine
the KE of a 625
kg roller

4. coaster car that
is moving with a
speed of 18.3
m/s.

5. 4. A 50 kg boy
and his 100 kg
father went
jogging. Both
ran at a rate of

6. 5 m/s. Who had
more kinetic
energy?

7. 5. What is the KE
of a 2000 kg boat
moving at 5.0 m/s?