A particle moving with kinetic energy of 3J makes a head - on collision with a stationary particle which as twice the mass. During the impact,
(a) the minimum kinetic energy of the system is 1 J.
(b) the maximum elastic potential energy of the system is 2 J
(c) momentum and total energy are conserved at every instant.
(d) the ratio of kinetic energy to potential energy of the system first decreases and then increases.

Options

A. only a, b are true
B. only a, b, c are true
C. a, b, c, d are false
D. a, b, c, d are true

Answer

D