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Asked by jhajuhi19 | 06 Oct, 2019, 09:35: PM
Expert Answer
Change in momentum after first kick = 25 N × 0.2 s = 5 kg-m/s
Change in momentum after second kick = 70 N × 0.1 s = 7 kg-m/s
Net change in momentum d(mv) = m (dv) = 12 kg-m/s
change in velocity dv = 24 m/s
hence mass of the ball = 12 / 24 = 0.5 kg
Answered by Thiyagarajan K | 06 Oct, 2019, 10:40: PM
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