Why does a vibrating simple pendulum not produce any

Aplane travels 1000 miles in 5 hours .what is the planes average speed?

What distance does a car travel as its speed changes from 0 to 20 m/s in 17 s at constant acceleration?

In a system with only a single force acting upon a body, what is the relationship between the change in kinetic energy and the work done by the force? answers: work is equal to the change in kinetic energy.work depends on the square of the change in potential energy.work is equal to the negative of the change in kinetic energy.work is equal to the square of the change in kinetic energy