Trolley A and trolley B are positioned on a horizontal bench with no friction. Trolley A travels to the right at a steady velocity $u = 0.44\,\text{m s}^{-1}$. Trolley B is at rest. Fig. 2.1 shows trolley A just before it hits trolley B.
(a)[1]
State the momentum of trolley B before the collision. Explain how you know.
(b)[3]
Calculate the mass of trolley B from the information given.
(c(i))[2]
Calculate $F$ for the trolleys on the rough surface.
(c(ii))[1]
State how this affects the time taken for the trolleys to come to rest. Explain your answer.
Worked solution & mark scheme
This 7-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Momentum is zero AND momentum = mass \times velocity OR the velocity of B is zero” …