# Velocity and Acceleration understanding

1. Jan 25, 2006

### mrserv0n

If somethings velocity is 0 can the acceleration be 0? If so why?

I have been trying to answer this and it seems I come up with different opinons from the text to the internet.

Which is it??

2. Jan 25, 2006

### vaishakh

A body is deccelerating, then its velocity starts tending to zero. Agreed. Then after sometime the velocit would reach zero, I mean the instantaneous velocity, But the decceleration might continue and hence the instantaneous acceleration is not 0.

3. Jan 25, 2006

### Hootenanny

Staff Emeritus
However, if a body is at rest (v=0) and no external force is acting, then by newton's first and second laws the acceleration must also be zero (f=ma). Therefore, yes it is possible but only if the body is at rest.

4. Jan 25, 2006

### mrserv0n

Thanks for the insight my fellow physic friends.