An object P of mass 150 g collides with another object Q of mass 50 g. After the collision, P and Q stick together and then travel on together. Before the collision, P is travelling at a speed of 8.0 m/s and Q is at rest. What is the speed of P and Q after the collision?
2.0 m/s2.0\text{ m/s}2.0 m/s
4.0 m/s4.0\text{ m/s}4.0 m/s
6.0 m/s6.0\text{ m/s}6.0 m/s
8.0 m/s8.0\text{ m/s}8.0 m/s
78 exam-style questions on CIE IGCSE Physics Momentum, covering Momentum. Each one has a worked solution and a mark scheme showing where the marks go.