A ball is projected into the air with 100 J of kinetic energy that is transformed to gravitational potential energy at the top of its trajectory. When it returns to its original level after encountering air resistance, its kinetic energy is

Question

Quizplus · Accepted Answer

Due to air resistance, some of the energy is converted into other forms (like heat), so the kinetic energy upon returning is less than 100 J.

A Ball Is Projected into the Air with 100 J