1.

A body moving with uniform acceleration describes 40m in the first 5sec and 65m in the next 5sec. it's initial velocity is

Answer»

Hii There!!!

Let u be the initial velocity, a = acceleration, t = TIME TAKEN by the body.

In the first 5seconds it MOVES 40m

s=ut+1/2 at^2

40=5u+1/2 5^2

8=u+5/2a

next it travels 65M in (5+5=10)

65=10u+1/2a 10^2

13=2u+10a

Therefore, u=19/2m/s


Hope it helps☺



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