The diagram below shows two trolleys, A and B connected to each other by an elastic strip of negligible mass.

      

The diagram below shows two trolleys, A and B connected to each other by an elastic strip of negligible mass. The trolleys are pulled apart on a smooth plane till tension in the elastic strip is 4.0N and are then released suddenly
q141102019938.png

(a) State with reason the total momentum of the trolleys when they are just released
(b) Calculate the initial acceleration of trolley A when released
(c) The velocity of the trolley B is 0.9ms-1 just before it collides with A. Determine the velocity of A just before the collision
(d) Which trolley covers a longer distance before collision? Explain
(e) Explain why the elastic strip may not stretch to the same original length after impact

  

Answers


Wilfred
(a) Zero (0) –It is because their velocities are still zero/ They are still stationary
q14a1102019938.png

(d) trolley A, because of it moves with high velocity

(e) Friction force
Wilfykil answered the question on October 1, 2019 at 06:42


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