The question postrd as a picture.

Compare the horizontal displacement of the two balls as they travel to the ground. what do you observe?

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

Convection currents are caused by differences in what two things?