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A truck starts from rest and rolls down ...

A truck starts from rest and rolls down a hill with a constant acceleration. It travels a distance of `400m` in `20 s`. Find its acceleration. Find the force acting on it if its mass is `7` metric tonnes (Hint.1 metric tonne=1000kg)

Text Solution

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`t = 20 s, V = 400 m` a
` a = (v)/(t) = (400)/(200) , 20ms^(-2)`
F = ma
` = 7 xx 1000 xx 20`
` = 7000 xx 20`
` = 140000` Newtons
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