A ball rolling down an incline has its minimum speed
A)at the end the incline.
B)half way down the incline.
C)near the top of the incline.
D)impossible to predict without knowing the ball's mass
E)impossible to predict without knowing the size of the ball

Question

Quizplus · Accepted Answer

The minimum speed of the ball occurs near the top of the incline, where its potential energy is at its maximum and its kinetic energy is at its minimum. As the ball rolls down the incline, the potential energy decreases while the kinetic energy increases, until it reaches the bottom with its maximum kinetic energy and zero potential energy. The mass and size of the ball do not affect its minimum speed on the incline as long as there is no friction involved.

A Ball Rolling Down an Incline Has Its Minimum Speed