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Q. A passenger train is travelling at 32 m/s when the engineer sees a freight train 384 m ahead of his train travelling in the same direction on the same track. The freight train is moving at a speed of 5.7 m/s.

(a)If the reaction time of the engineer is 0.33 s, what is the minimum (constant) rate at which the passenger train should lose speed if a collision is to be avoided?

(b) If the engineer's reaction time is 0.75 s and the train loses speed at the minimum rate described in Part (a), at what rate is the passenger train approaching the freight train while the two collide?

(c) For both reaction times, how far will the passenger train have travelled in the time between the sighting of the freight train and the collision?

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Category:- Physics
Reference No.:- M9172908

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