Question
A ball with an initial velocity of 10 m/s moves at an angle $60^\circ$ above the $+x$ direction. The ball hits a vertical wall and bounces off so that it is moving $60^\circ$ above the $-x$ direction with the same speed. What is the impulse delivered by the wall?
$-10m$, where $m$ is the mass of the ball in kilograms.
Solution Video