Physics 9702 · AS & A Level · Linear momentum and its conservation

Linear momentum and its conservation — practice question

(a(i))[1]

Define force

(a(ii))[3]

State Newton’s third law of motion

(b(i).1)[1]

State the relationship between $F_A$ and $F_B$

(b(i).2)[1]

State the relationship between $t_A$ and $t_B$

(b(ii))[1]

Use your answers in (i) to show that the change in momentum of sphere A is equal in magnitude and opposite in direction to the change in momentum of sphere B

(c)[3]

For the spheres in (b), Fig. 3.2 shows how the momentum of sphere A varies with time before, during and after its collision with sphere B. Fig. 3.2 also gives the momentum of sphere B before the collision. Complete Fig. 3.2 to show how the momentum of sphere B varies with time during and after its collision with sphere A.

Worked solution & mark scheme

This 10-mark question has a full step-by-step worked solution and mark scheme. One marking point: momentum changes per unit time

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