A train is travelling at when the driver applies the brakes and the train comes to rest in

PHYSICS · Single correct · GCSE · Physics · Forces · Forces

Problem

A train is travelling at 72 km h−172\,\text{km h}^{-1} when the driver applies the brakes and the train comes to rest in 400 m400\,\text{m}. Calculate the magnitude of the uniform deceleration produced by the brakes. (a) 1.0 m s−21.0\ \text{m s}^{-2} (b) 2.0 m s−22.0\ \text{m s}^{-2} (c) 0.50 m s−20.50\ \text{m s}^{-2} (d) 0.25 m s−20.25\ \text{m s}^{-2}

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