Find the change in momentum of a body when its kinetic energy becomes four times the original value. Share with your friends Share 0 Samiksha Goyal answered this the mss of body will remain same. because when kinetic energy increases the velocity is doubled but the mass remains same 2 View Full Answer Harshit Chouhan answered this 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