Find Coefficient of Kinetic Friction of Crate having Mass 50 kg Falls Horizontally

A crate having mass 50.0 kg falls horizontally off the back of the flatbed truck, which is traveling at 100 km/h. Find the value of the coefficient of kinetic friction between the road and crate if the crate slides 50 m on the road in coming to rest. The initial speed of the crate is the same as the truck, 100 km/h.
This video is made for the students of physics. forces, friction, kinematic equations, vectors, projectiles, momentum and impulse, collisions, uniform circular motion, rotational motion, simple harmonic motion, current electricity @physicsoffshore ​