A trolley increases its speed from to

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

Problem

A

4\,\text{kg}

trolley increases its speed from

5\,\text{m/s}

to

9\,\text{m/s}

. What is the work done on the trolley? (a)

224\,\text{J}

(b)

112\,\text{J}

(c)

162\,\text{J}

(d)

98\,\text{J}

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