a train is travelling at a speed of 90 km per hour brates are applied so as to produce a uniform acceleration of -0.5 second ² find how far the train will go before it is brought to rest.
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Answer:
➠ Distance covered by train before it is brought to rest.
Concept :
➛ Applied brakes exert retarding force on the train and it results into uniform retardation in motion.
➛ Distance covered by moving object before coming to rest is called as stopping distance.
✭ Third equation of kinematics :
v² - u² = 2as
where,
◕ v denotes final velocity
◕ u denotes initial velocity
◕ a denotes acceleration
◕ s denotes distance
Conversion :
➾ 1kmph = 5/18mps
➾ 90kmph = 90 × 5/18 = 25mps
Calculation :
please follow me and by mistake i put 0.6 seconds sorry ha
you can replace it with 0.5
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