A heavy truck and a small car rolling down a hill at the same speed are forced to stop in the same amount of time. Compared to the force that stops the car, the force needed to stop the truck is

Question

Quizplus · Accepted Answer

The force needed to stop the truck is greater because the truck has more mass than the car, and according to Newton's second law (F = ma), more force is required to change the motion of an object with greater mass.

A Heavy Truck and a Small Car Rolling Down a Hill