Question

A body starts from rest and rolls down a hill with a constant acceleration. If it travels 400 m in 20 seconds, calculate the force acting on the body if its mass is 10 kg.

Answer 1

Explanation:

A body starts from rest and rolls down a hill with a constant acceleration. If it travels 400m in 20seconds, Calcualte the force acting on the body if its mass is 10kg.

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Answer 2

Answer:

Explanation:

U=0m

s=400m

t=20sec

m=10kg

a=?

f=?

s=ut+1/2at^2

400=0×20+1/2a×20^2

400=0+200a

400=200a

then,a=400/200

a=2m/sec^2

f=ma

f=10×2

f=20N