A solid cylinder (mass 0.440 kg, radius 2.00 cm) rolls without slipping at a speed of 5.00 cm/s. What is its total kinetic energy

The 5-kg cylinder is initially at rest when it is placed in contact with the wall b and the rotor at a. if the rotor always maintains a constant clockwise angular velocity v = 6 rad> s, determine the initial angular acceleration of the cylinder. the coefficient of kinetic friction at the contacting surfaces b and c is mk = 0.2.

Alfred pushes on a heavy box, but cannot move it. the box has a lot of inertia motion friction gravity

What object a collides with object b and bounces back its final momentum is?