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A body with initial velocity 8 m/s moves...

A body with initial velocity 8 m/s moves along a straight line with constant acceleration and travels 640 m in 40 s. For the 40 s interval, find
the average velocity

Text Solution

Verified by Experts

Here, s = 640 m, t = 40 s and u = 8 m/s
Assume x = 0 at t = 0
`x=ut +(1)/(2) at^(2)" or "640 =(8) (40s) +(1)/(2) a(40)^(2)` and solving we have `a=(2(640-320))/(1600) =0.40" m//s"^(2)`
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