SAMPLE LESSONS > A LEVEL DYNAMICS
LINEAR MOMENTUM
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WORKED EXAMPLES
EASY
Body A of mass 5.0 kg moves to the right with a velocity of 4.0 m s-¹. Body B of mass 3.0 kg moves to the left with a velocity of 8.0 m s-¹. Calculate (a) the momentum of A, (b) the momentum of B, (c) the total momentum of A and B.
Answer
MEDIUM
A projectile of mass m is fired with initial velocity u from a point P as shown below. The projectile lands with velocity v at angle θ to the ground.
Neglecting air resistance, in terms of m, v, and θ, determine the magnitude of the change in momentum of the mass between leaving P and entering Q is
Answer
HARD
A 200 g billiard ball rebounds off the wall with velocities as shown in the diagram. Evaluate the change in momentum of the ball.
Answer
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