Question

Two bodies of masses M1 and M2 have equal momenta. What is the ratio of thier kinetic energies K1 K2

Answer 1

Since the bodies have equal momenta i.e the product of their masses and their velocities their kinetic energy will completely be same i.e K1 : K2 = 1

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Answer 2

ratio of their kinetic energy is equal to ratio of their velocities