Question

A small car is traveling at a speed of 60 mph on the highway. In the next lane, a large passenger bus is traveling at the same speed. Which of the following is true?
A. The bus has more kinetic energy than the car.
B. The car has more kinetic energy than bus.
C. The car and the bus have potential energy, not kinetic energy.
D. The car and bus have the same amount of kinetic energy.

Answer 1

Answer:

A. The bus has more kinetic energy than the car.

Explanation:

Kinetic energy is the amount energy possessed by the body when in motion. Kinetic is given by the formula;

K.E = 1/2mv²,

where m is the mass of the body and v is the velocity of the body.

Kinetic energy therefore depends on the mass and the velocity of the body. In this case, the passenger bus has more kinetic energy at constant speed than the car since it has a larger mass.