Find the change in momentum of a body when its kinetic energy becomes four times the original value.

the mss of body will remain same. because when kinetic energy increases the velocity is doubled but the mass remains same
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ke = 1/2 m v2.and p =mv .
we can write k.e =1/2×m/m×v square.
replace p=mv.

1/2m×m square×v square =k.e
k.e =1/2m×p square
then after soving we will get k.e2√2= p.
  • -5
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