Theorem Of Momentum

A small ball with a mass of 50 g undergoes uniform circular motion at a speed of 20 m/s.

A small ball is thrown vertically upward with a speed of 10 m/s. It lands with a speed of 20 m/s. Air resistance is negligible.

A small ball is thrown horizontally with a speed of 10 m/s. It lands after 2 s. Air resistance is negligible.

A 20 g ball falls vertically, hitting the horizontal ground at 5 m/s. It bounces back with a speed of 3 m/s. The contact time with the ground is 0.02 s. Air resistance is negligible.

A bullet is fired from horizontal ground with a speed of 100 m/s at an angle of 60° above the horizontal. Air resistance is negligible.

A 0.14 kg softball is pitched horizontally at 50 m/s. It is hit by a bat and moves back at a speed of 80 m/s at an angle of 45° above the horizontal.

Two objects, A and B, have equal kinetic energy. The mass of object A is 4 times the mass of object B.

A truck with a mass of 2000 kg first travels north at a speed of 12 m/s. It then turns to travel east and accelerates to 16 m/s.

As shown in Figure, a ball with mass $m=1$ kg strikes a horizontal steel plate at a speed of $v=10$ m/s and an angle of $60^\circ$ with the horizontal. It rebounds with the same speed and angle.

A spring is fixed at its upper end. An object A of mass m is attached to its lower end and hangs at equilibrium at position P. Another object B, also of mass m, is then hung from A by a thin string. After reaching a new equilibrium, the string is cut. Neglect spring mass and air resistance.