Question

when a force acts on a body of mass hundred gram the change in its velocity is 20 cm per second the magnitude of this force is

Answer 1

acceralation means change in velocity per second. therefore
change in velocity per second = a = 20 cm / s = 20 /100 m/s
m = 100 gm = 100/ 1000 kg
f = ma
100/ 1000 × 20 / 100
= 0.02 N
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