Question

Which of the following is the best example of kinetic energy being transformed into potential energy?

bending a paper clip
⊝

starting an automobile engine
⊝

coasting down hill on a bicycle
⊝

winding the spring on a toy car

Answer 1

A ball rolling up a hill

Step-by-step explanation:

I did the test ;)

Answer 2

coasting down hill on a bicycle

Step-by-step explanation:

Coasting down the hill on a bicycle is a typical example of how kinetic energy is being transformed to potential energy in a system.

Kinetic energy is the energy due to the motion of a body, it can be derived using the expression below;

K.E =
`(1)/(2)` m v²

Potential energy is the energy due to the position of a body. It can be derived using;

P.E = mgh

m is the mass

v is the velocity

g is the acceleration due to gravity

h is the height

Now, at the top of the hill, the potential energy is at the maximum. As the bicycle coasts down the potential energy is converted to kinetic energy.