Ball P of mass 0,16 kg, moving east at a speed of 10 m∙s-1 , collides head-on with another ball Q of mass 0,2kg, moving west at a speed of 15 m∙s-1 . After the collision, ball P moves west at a speed of 5 m∙s-1, as shown in the diagram below.
Ignore the effects of friction and the rotational effects of the balls.
4.1 Define the term momentum in words. (2)
4.2 Calculate the:
4.2.1 Velocity of ball Q after the collision (5)
4.2.2 Magnitude of the impulse on ball P during the collision (3)
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