# Homework Help: 2 objects whit acceleration

1. Mar 5, 2010

### sese

1. The problem statement, all variables and given/known data
Two objects start from same point whit 4s one after another traveling same direction whit
speed01 =5 m/s ; a01=0.5 m/s2
and
speed02=2 m/s ; a 02=1 m/22

$$\tau$$=4s

Find at what time the objects meet?

2. Relevant equations
d01=S01*t01*(a01+t012)/2
d02=S02*t02*(a02+t022)/2
(I think!)
3. The attempt at a solution
t01=S01/a01
t02=S02/a02

After fiding the distance from equation's i get stuck

2. Mar 5, 2010

### tiny-tim

Welcome to PF!

Hi sese! Welcome to PF!

(btw, we usually use v or u for speed, not s, and s for distance, not d )
No, those equations are wrong.

You need s = vit + at2/2.

See the PF Library on constant acceleration