Two identical billiard balls of diameter 5 cm each moving

Last updated: 6/11/2023

Two identical billiard balls of diameter 5 cm each moving with a speed of 3 ms roll without slipping towards each other on a horizontal rectangular U shaped trough that is sufficiently deep that the balls are clear of its base see figure The resulting instantaneous collision is perfectly elastic and during it each ball reverses its linear velocity through their angular velocities are not affected