Two particles A A\,A and B B\,B have masses 4 kg and m m\,m kg respectively. They are moving towards each other in opposite directions on a smooth horizontal table when they collide directly. Immediately before the collision, the speed of A A\,A is 5 m s−1^{-1}−1 and the speed of B B\,B is 3 m s−1^{-1}−1. Immediately after the collision, the direction of motion of A A\,A is unchanged and the speed of A A\,A is 1 m s−1^{-1}−1.
Find the magnitude of the impulse exerted on A A\,A in the collision.
Immediately after the collision, the speed of B B\,B is 2 m s−1^{-1}−1. Find the value of mmm.
8 exam-style questions on Edexcel A Level Old Maths Momentum. Each one has a worked solution and a mark scheme showing where the marks go.