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2 objects whit acceleration

  • Thread starter sese
  • Start date
  • #1
3
0

Homework Statement


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

[tex]\tau[/tex]=4s

Find at what time the objects meet?

Answer:28 s

Homework Equations


d01=S01*t01*(a01+t012)/2
d02=S02*t02*(a02+t022)/2
(I think!)

The Attempt at a Solution


t01=S01/a01
t02=S02/a02

After fiding the distance from equation's i get stuck
 

Answers and Replies

  • #2
tiny-tim
Science Advisor
Homework Helper
25,832
249
Welcome to PF!

Hi sese! Welcome to PF! :smile:

(btw, we usually use v or u for speed, not s, and s for distance, not d :wink:)

Homework Equations


d01=S01*t01*(a01+t012)/2
d02=S02*t02*(a02+t022)/2
No, those equations are wrong.

You need s = vit + at2/2.

See the PF Library on constant acceleration :wink:
 

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