Question

a body is thrown from a tower of height 45m another body is thrown up at the same instant with speed u from a height of 30m if they reach the ground simultaneously , u is(g=10m/s^2)

Answer 1

hey this is our old qn !!! why are u posting this for 3rd time?

Answer 2

no

Answer 3

http://openstudy.com/updates/4faf7148e4b059b524fa6ef4

Answer 4

For the first body 45=1/2*10*t^2 45=5t^2 t^2=9 t=3 For the second body -30=3u-1/2*10*9 -30=3u-45 45-30=3u 15=3u u=5m/s

Answer 5

oh so sorry i for got

Answer 6

lol stole the answer ;)

Answer 7

@glgan1 has done it nicely!! what happened to u??