9702/52/F/M/21: A student investigates the collision of two gliders A and B on a linear air-track, as shown in Fig. 2.1. The light gate is connected to a timer. A card of length L is attached to glider B. The mass of glider B and the card is m. Glider B is initially at rest.
The student releases glider A so that it travels at a constant velocity u towards the stationary glider B. The gliders collide and then separate. The card on glider B passes through the light gate. The student records the time t for the card to pass through the light gate from the timer.
The student changes the mass of glider B and repeats the experiment.
It is suggested that the velocity v of glider B as it passes through the light gate and m are related by the equation
\(v = \dfrac{2uA}{m + A} \)
where A is the mass of glider A.
Solutions for practical Paper 5 variant 1 Question 2 February/March 2021 Cambridge A Level Physics.
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