If a force always acts perpendicular to an object's direction of motion,that force cannot change the object's kinetic energy.

Question

Quizplus · Accepted Answer

If a force acts perpendicular to an object's direction of motion, it does not do work on the object, which means it cannot change the object's kinetic energy. Kinetic energy is only affected by work done on the object in the direction of its motion.

If a Force Always Acts Perpendicular to an Object's Direction