1.

When the momentum of body is increasedby three times, its K.E. becomes :(a) Twice(b) Half(c) Four times (d) Nine times

Answer»

Relationship between kinetic energy and momentum is like:-

k.E= P²/ m

p= (momentum)

m= (mass)

by keeping mass constant we have:-

k.E= p²

k.E= (3)²

K.E= 9 times☺

Relationship between kinetic energy and momentum is like:-

k.E= P²/ m

p= (momentum)

m= (mass)

by keeping mass constant we have:-

k.E= p²

k.E= (3)²

K.E= 9 timesAnswerOption- D



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