Two identical smooth spheres

PHYSICS · Multi-part · AP · Physics 1: Algebra-based · Linear Momentum · Linear Momentum

Problem

Two identical smooth spheres, each of mass

0.40\,\text{kg}

, collide on a frictionless horizontal surface. Sphere

P

moves with speed

3.0\,\text{m\,s}^{-1}

towards stationary sphere

Q

in a head-on collision. (i) Find the loss of kinetic energy if the coefficient of restitution is

0

. (ii) Find the loss of kinetic energy if the coefficient of restitution is

0.6

. (iii) Determine the ratio

\dfrac{\Delta K_{e=0.6}}{\Delta K_{e=0}}