Question

A body of mass 4kg is drop from a height of 100mtr calculate it's velocity when the body reaches

Answer 1

In this question there is no use of mass,

For body 1:

Height = 100m

initial velocity = 0m/s

acceleration due to gravity = 10m/s^2

Therefore, we use the formula,

s = ut + 1/2 gt^2

100 = 1/2 10 t2

Therefore, t = 10v2seconds

For body2:

Height  = 50m

u = 0m/s

g = 10m/s^2

Using formula we get,

time = v10seconds

Hope this helps you...

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