View Full Version : Constant acceleration
babi_gurl
Feb 25, 2007, 04:01 AM
Hey help me with this question :o
A body moving with constant accelertion and starting from rest covers 9m in the eighth second. Find the acceleration
Thankss:)
Capuchin
Feb 25, 2007, 04:05 AM
Hi babi_gurl
You need to use the suvat equation s = ut + \frac{1}{2}at^2
You can rearrange this for a and then put in your values for u, t and s.
Let me know if you get stuck!
Capuchin
Feb 25, 2007, 04:15 AM
From PM:
hey thanks for replying to my questions =D and yeah can u check if i did it correctly hehe
u=0m/s s=9m t=8s
s=ut+1/2at^2
so to make a the subject,
a= (s-ut) divide by 1/2t^2
a= (9-0x8)/0.5x8^2
a=9/32
so hence, a= 0.28ms^-2
thanks soo much =D
Yes that looks right to me :)