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ICSE Class 10 Answered

1) the momentum of a football and a tennis ball is the same. do they have the same kinetic energy?explain?
Asked by pradipdhole | 09 Jun, 2019, 10:19: PM
answered-by-expert Expert Answer
kinetic energy = (1/2)mv2 = (1/2) (mv)2/m = (1/2) p2/m
 
where m is mass, v is velocity, p is momentum (p=mv)
 
Since tennis ball anfd foot ball has same momentum, kinetic energy of tennis ball is greater than
that of football because mass of football is greater than tennis ball
Answered by Thiyagarajan K | 10 Jun, 2019, 09:22: AM

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