# Motion - zero velocity but still having acceleration

1. May 9, 2012

### Kartik.

Motion -- zero velocity but still having acceleration

What would be a example of a body having zero velocity but still having acceleration, except the example of a body projected vertically upwards and at the highest point it has no velocity but an acceleration equals 'g'?

2. May 9, 2012

### Staff: Mentor

Re: Motion

Reversing the direction something is moving in?

3. May 9, 2012

### A.T.

Re: Motion -- zero velocity but still having acceleration

There is always a frame of reference where a body has zero velocity.

4. May 9, 2012

### sophiecentaur

Re: Motion -- zero velocity but still having acceleration

An obvious one comes to mind: consider a pendulum at each end of its motion.

5. May 9, 2012

### HallsofIvy

Staff Emeritus
Re: Motion -- zero velocity but still having acceleration

Or throw a ball upward. At its highest point the ball's velocity is 0 but its acceleration is still -9.8 m/s^2.

6. May 9, 2012

### DrGreg

Re: Motion -- zero velocity but still having acceleration

...or someone bungee jumping when they reach the lowest point.