Question

Relation between Kinetic energy and Momentum is KE=p^2/2m calculate the momentum of a body of mass 4kg with kinetic energy is 2J

Answer 1

Answer:

P²=2mK

  =2×4×2

   =16

P=√16

 =4

(OR)

KE=1/2mv²

m=4 kg

KE=2

KE=1/2mv²

2    =1/2×4×v²

v² = 2/2=1

v = √1 = 1

momentum=mass×velocity

P=4×1 = 4

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