truck starts from rest and roll down on him from folding acceleration it travels a distance of 400 metre in 20 seconds find its Momentum
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truck starts from rest and roll down on him from folding acceleration it travels a distance of 400 metre in 20 seconds find its Momentum
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Explanation:
Given data:
Mass of stone(m)=7000 kg
Distance(S)=400 meter
Time(t)=20 second
1) We have to find the acceleration of the truck
So from the equation of motion S=ut+
1 a×t^2, whereu=0
2
S= 1 a×t
2
a= 2×S = 20×202×400 =2 sec 2m
t^2
2) Force acting on truck
So,from newton's 2
nd
law of motion
F
=ma=7000×2=14000N=14kN
hope it will help you