Multiple choice If the momentum of a body is doubled, the kinetic energy is halved is unchanged is doubled increases 4 times Reveal answer Fill a bubble to check yourself D Correct answer Explanation Kinetic energy (KE) is related to momentum (p) by the formula KE = p^2 / (2m). If momentum is doubled (2p), the new kinetic energy becomes (2p)^2 / (2m) = 4 * (p^2 / 2m), which is 4 times the original.