A4.3-g object moving to the right at 22 cm/s makes an elastic head-on collision with a 8.6-g object that is initially at rest. what is the velocity of the 4.3-g mass after the collision?

The right at +20.0 cm/s makes an elastic head-on collision with a 10.0 g object that makes anelastic head-on collision with a 10.0 g object that is initially at rest.(b) Find the fraction of the initialkinetic energy transferred to the 10.0 g object.of small mass before and after collision; V=velocity of big mass after collision.

The correct answer is  "c".  it is "c" because melting is an endothermic change, and endothermic get's energy from surroundings. 

You would need to take a picture so i can see