A car of mass is moving on a straight road at

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

Problem

A car of mass

1000\,\text{kg}

is moving on a straight road at

20\,\text{m}\,\text{s}^{-1}

. The brakes produce a uniform retardation of

5\,\text{m}\,\text{s}^{-2}

. What is the minimum distance required to bring the car to rest? (a)

80\,\text{m}

(b)

40\,\text{m}

(c)

60\,\text{m}

(d)

100\,\text{m}

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