QUESTION 5
Railway carriage X, of mass 21 000 kg, crashes into the back of railway carriage Y
which is travelling in the same direction as X on a straight level track. The graph
shows how the velocity of each railway carriage varies with time
velocity (m.s?)
5 X
4
3 Y
2 X
1 Y
0 1,0 2,4 time (s)
Ignore frictional forces between the railway carriages and the track during the
collision. Ignore air resistance.
5.1 Define the term Impulse in words. (2)
5.2 Calculate the magnitude of the impulse railway carriage X experiences between 1,0 s and 2,4 s. (3)
5.3 Calculate the magnitude of the force that railway carriage X exerts on carriage Y between 1,0 s and 2,4 s. (3)
5.4 What is the magnitude of the force that carriage Y exerts on carriage X? Explain using principles of physics. (3)
5.5 State principle of conservation of momentum, in words (2)
5.6. Calculate the mass of railway carriage Y. (4)
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