Find the initial velocity of a car. Which stopped in 10 second by applying breakes. The retardation due to breakes in 2.5m/sec2?
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answer is 25m/s
Explanation:
t=10sec
v=0 because breakes are applied so final velocity will be 0
a=-2.5/sec^2
we know that v=u+at
0=u+(-2.5)10
0=u-25
u=25m
so initial velocity is 25m
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