The velocity of a body of mass 20 kg decrease from 20 m/s to 5 m/s in a distance of 100meter .force on the body is
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u = 20 m/s
v = 5 m/s
s = 100 m
m = 20 kg
v^2 - u^2 = 2as
25 -400 = 2a×100
a = - 18.75 m/ s^2
mamnitude of force = ma = 20 × 18.75 = 375N
v = 5 m/s
s = 100 m
m = 20 kg
v^2 - u^2 = 2as
25 -400 = 2a×100
a = - 18.75 m/ s^2
mamnitude of force = ma = 20 × 18.75 = 375N
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