Physics, asked by priyankaverma2078, 11 months ago

(a) A truck starts from rest and rolls down a hill with a constant acceleration. It travels a distance of 400 m in 20 s. What is the initial velocity of the truck

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Answered by Anonymous

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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+ 1/2 a×t ^2

, whereu=0

1/2 a×t ^2

a=2×400/20×20

=2 m/sec ^2

2) Force acting on truck

So,from newton's 2 nd law of motion

F =ma=7000×2=14000N=14kN

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(a) A truck starts from rest and rolls down a hill with a constant acceleration. It travels a distance of 400 m in 20 s. What is the initial velocity of the truck​

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(a) A truck starts from rest and rolls down a hill with a constant acceleration. It travels a distance of 400 m in 20 s. What is the initial velocity of the truck