Work-energy theorem: A 1000 kg car experiences a net force of 9500 N while decelerating from 30.0 m/s to 23.4 m/s. How far does it travel while slowing down?

Question

Quizplus · Accepted Answer

The work-energy theorem states that the work done by the net force is equal to the change in kinetic energy. The initial kinetic energy is (1/2)*1000*(30)^2 and the final kinetic energy is (1/2)*1000*(23.4)^2. The work done by the force is 9500*d, where d is the distance. Solving for d gives approximately 18.5 m.

Work-Energy Theorem: a 1000 Kg Car Experiences a Net Force