Question

A small ball collides with a massive wall, head-
on. If the initial speed of ball is 10 m/s and
coefficient of restitution is 0.2, then the final
speed of ball will be
(1) 4 m/s
(2) 1 m/s
(3) 2 m/s
(4) Zero​

Answer 1

Explanation:

given e=1/2

i.e it's an inelastic not perfect just inelastic collision

then conservation of linear momentum will occur