Question

A car’s engine stalls going up a hill and slows down as a result. Which statement describes the energies of the car?
A) The kinetic energy increases and the gravitational potential energy remains the same. C) The kinetic energy decreases and the gravitational potential energy remains the same. B) The kinetic energy increases and the gravitational potential energy decreases. D) The kinetic energy decreases and the gravitational potential energy increases.

Answer 1

Answer:

D) The kinetic energy decreases and the gravitational potential energy increases.

Explanation:

• Kinetic energy is the energy possessed by a body or an object while in motion. This energy is given by 1/2mv², where m is the mass of the object and v is the velocity. Kinetic energy will decrease as a car is going up hill as the speed will be decreasing.
• Potential gravitational energy is the energy possessed by a body while at rest and is given by mgh, where m is the mass, g is the gravitational acceleration and h is the height. In this case, the potential energy will be increasing as the car is going up hill as the height will be increasing.

Answer 2

Answer:

D) The kinetic energy decreases and the gravitational potential energy increases.