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ICSE Class 10 Answered

 A ball of mass 100 gram moving with a velocity of 20 m per second is brought to rest in 0.02 second find the average retarding force acting on the ball
Asked by Samrat | 29 Jun, 2018, 10:11: PM
answered-by-expert Expert Answer
retardation a is calculated by using the formula " v = u - a×t ", with final speed v =0;
 
a = u/t = 20/0.02 = 1000 m/s2
 
force exerted on the ball = mass × retardation = 100×10-3 × 1000 = 100 N
Answered by Thiyagarajan K | 30 Jun, 2018, 05:49: PM

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