Question

predicting changes in kinetic energy quick check
a large truck and a small car are moving at the same speed, traveling up and down hills, and over bumpy roads. which one has more kinetic energy? (1 point)
the car and truck have the same kinetic energy.
the truck has less kinetic energy because it has greater mass.
the truck has more kinetic energy because it has a greater mass.
the car has more kinetic energy because it moves fast down hills.

Explanation:

Kinetic energy is calculated using the formula \(KE=\frac{1}{2}mv^{2}\), where \(m\) is mass and \(v\) is velocity. Since the truck and car have the same speed (\(v\) is equal), the object with greater mass (\(m\)) will have more kinetic energy. The truck has a greater mass than the car.

Answer:

The truck has more kinetic energy because it has a greater mass.