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CBSE Class 9 Answered

A force of 100 N acting on a body of mass m ,for 4 second gives it a velocity of 20 m/s find the mass of the body if it was initially at rest
Asked by Kumarprince1392 | 22 Apr, 2019, 10:47: AM
answered-by-expert Expert Answer
Acceleration produce by this force = change in velocity/ time taken = 20/4 = 5m/s 
As we know Force F = ma
So m = F/a = 100/5 = 20 kg
Answered by Ankit K | 22 Apr, 2019, 11:29: AM
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