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Force and Laws of Motion
A truck starts from rest and rolls down a hill with a constant acceleration. It travels a distance of 400 m in 20 s. Find its acceleration. Find the force acting on it if its mass is 7 tonnes (Hint: 1 tonne = 1000 kg.)
u = 0 m/s
S = 400 m
t = 20 s
To Find: a = ? and F = ?
For acceleration (a):
Using 2nd equation of motion
For force (F) :
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