Question

A body of mass 500g initially at rest is acted upon by force which causes it to move a distance of 4m in2s calculate the force

Answer 1

m=500 g = 0.5 kg

u=0

s=4m

t=2s

F=ma

a=?

From the 2nd eqn. of motion,

s=ut + 1/2 at^2

4= 0 + 1/2 × a × 2×2

4=2a

a=2m/s^2

F=ma

   = 0.5 × 2 = 1 N

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