# Question Video: Finding the Impulse Exerted on a Sphere Moving on a Horizontal Smooth Plane after Collision with a Barrier Mathematics • Third Year of Secondary School

A smooth sphere of mass 1412 g was moving horizontally in a straight line at 13.5 m/s when it hit a smooth vertical wall and rebounded at 9 m/s. Determine the magnitude of the impulse exerted on the sphere.