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TOPIC :WORK, ENERGY AND POWER

Number of questions are 252, Select_Question:

Number of questions are 252, Select_Question:

Q1) If momentum is increased by 20% then kinetic energy increased by..[ AFMC 1997]

SOLUTION

Formula for kinetic energy in terms of momentum is

momentum is increased by 20% thus new momentum p'=1.2p

Substituting of p' in above equation we get

Thus increase in KE=44%

Answer: (c)