Answers

2015-07-27T10:03:13+05:30
Consider an object which has travelled displacement s in the time t under uniform acceleration a.Let intial velocity of the object be u and the final velocity v.
s=1/2t(u+v) -1
from the veocity relation
v=u+at -2
substitute 1 in 2
s=1/2t(u+u+at)
=1/2t(2u+at)
s=ut+1/2at^2
Hope it helps and pls mark it as the best.


2 5 2
2015-07-27T19:42:13+05:30
Average velocity=u+v/2
or, s=distance
s=v^t
so. s= (u+v)t/2
v=u+at
so. s=(u+u+at)t/2
=(2u+at)t/2
=2ut+at sq.
s=ut+1/2at sq.
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