A train is travelling at a speed of 90 kmh^-1. Brakes are applied so as to produce a uniform acceleration of -0.5 ms^-2. Find how far the train will go before it is brought to rest.
Motion in One Dimension
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Question

A train is travelling at a speed of 90 kmh^-1. Brakes are applied so as to produce a uniform acceleration of -0.5 ms^-2. Find how far the train will go before it is brought to rest.

KnowledgeBoat · Accepted Answer

Given, Initial velocity (u) = 90 kmh^-1 Convert kmh^-1 to ms^-1 90 x = 25 ms^-1 Terminal velocity (v) = 0 Acceleration (a) = -0.5 ms^-2 According to the third equation of motion, v² – u² = 2as Substituting we get, s = = 625 m. Hence, the train travels 625 m before it is brought to rest

Science

A train is travelling at a speed of 90 kmh^-1. Brakes are applied so as to produce a uniform acceleration of -0.5 ms^-2. Find how far the train will go before it is brought to rest.

Motion in One Dimension

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A train is travelling at a speed of 90 kmh-1. Brakes are applied so as to produce a uniform acceleration of -0.5 ms-2. Find how far the train will go before it is brought to rest.

Motion in One Dimension

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A train is travelling at a speed of 90 kmh^-1. Brakes are applied so as to produce a uniform acceleration of -0.5 ms^-2. Find how far the train will go before it is brought to rest.

A bus starting from rest moves with a uniform acceleration of 0.1 ms^-2 for 2 minutes. Find
(a) the speed acquired,
(b) the distance travelled.

A trolley, while going down an inclined plane, has an acceleration of 2 cms^-2. What will be its velocity 3 s after the start?

A racing car has a uniform acceleration of 4 ms^-2. What distance will it cover in 10 s after start?