# Acceleration problem. Easy

1. Feb 27, 2013

A boy is running a a constant velocity of 3.0 m/s [E] and passes his father who is standing still. The father immediately starts to chase his son with a constant acceleration of 1.5m/s at the instant his that his son reachers him

How long does it take the father to catch his son?

Am I correct?

Initial Velocity is 3.0m/s [E]
Average Acceleration is 1.5m/s^2
But what is my V final?

2. Feb 27, 2013

### stunner5000pt

Are you saying the initial velocity of the father is 3.0m/s?

When the father does catch up to the son, what two quantites - v1,v2,a,d or t - will they have in common?

3. Feb 27, 2013

### ehild

There are two different objects moving, boy and father. The boy moves with constant velocity. The father moves with constant acceleration with zero initial velocity. Father catches the son when they are at the same place again, that is the displacements are equal. Write up the displacement of both in terms of time.

ehild

4. Feb 28, 2013