Potential and Kinetic

At what position does a roller coaster have the greatest potential energy?

• at the top of the hill

• at the top of the smaller hill

• half-way down the hill

• towards the bottom of the hill

Mechanical energy is defined as the sum of both the potential energy and the kinetic energy of an object. According to the law of conservation of energy, what happens to the mechanical energy if the potential energy of an object decreases?

• mechanical energy increases

• mechanical energy decreases

• mechanical energy remains unchanged

• mechanical energy increases and then decreases

What kind of energy is in a rock at the edge of a cliff?

• Potential energy

• Kinetic energy

• Friction

• Thermal

Energy due to motion is __________ energy.

• potential

• friction

• kinetic

• gravity

Which of the following situation shows the transfer of potential energy to kinetic energy?

• The man selling barbecue.

• Ball on the floor.

• The boy eating ice cream.

• Riding on a bike going up and down the hill.