Question

A train is travelling at a speed of 70 km h–1. Brakes are applied so as to produce a uniform acceleration of – 0.5 m s-2. Find how far the train will go before it is brought to rest.

Answer 1

Answer:

v2-u2=2as

v2-u2/2a=s

v=final velocity=o

u=initial velocity= 75kmph=20.83mps

substituting values,

(0)2-(20.83)2=2*-0.5

=0-433.8889=-1

therefore it goes 433.8889m.

Explanation:

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