A train is travelling at a speed of 90 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.
Oh no i have to go bye
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A train is travelling at a speed of 90 km /h. Brakes are applied so as to produce a uniform acceleration of . Find how far the train will go before it is brought to rest.
Answer :
Given, initial velocity= 90 km/h = 90*5/18=25m/s-2
final velocity = 0 m/s
{ as train is brought to rest}
a = - 0.5m/s-2
By the third motion equation,
v2 =u2+2as
therefore s =625m/s2
The train will travel 625 meters before it is brought to rest.
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