Many people sense that if the velocity is zero, the acceleration must also be zero.

Are they right?
 
 

Ask yourself:

Does stepping over the home plate imply your velocity is zero as you pass over the plate?  (Assuming you set up the home plate as the origin of your coordinate system; that is, as the point x = 0, y = 0.)

Velocity is the rate of change of position.  When the position is zero, the velocity might be anything.

Acceleration is the rate of change of velocity.  Acceleration is to velocity what velocity is to position.

When the velocity is zero, the acceleration might be . . . ?
 
 


RECONSIDER
The Bouncing Ball