A car travelling at is brought to rest in with uniform deceleration

PHYSICS · Single correct · A Level · Physics · Mechanics and materials · Mechanics and materials

Problem

A car travelling at 72 km h−172\,\text{km h}^{-1} is brought to rest in 100 m100\,\text{m} with uniform deceleration. Determine the magnitude of its deceleration. (a) 4 m s−24\,\text{m s}^{-2} (b) 1.6 m s−21.6\,\text{m s}^{-2} (c) 2 m s−22\,\text{m s}^{-2} (d) 2.9 m s−22.9\,\text{m s}^{-2}

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