A trolley of mass speeds up from to in

PHYSICS · Single correct · CBSE · Physics · Laws of Motion · Laws of Motion

Problem

A trolley of mass

4\,\text{kg}

speeds up from

1\,\text{m/s}

to

3\,\text{m/s}

in

2\,\text{s}

. What is the magnitude of the net force acting on the trolley? (a)

8\,\text{N}

(b)

4\,\text{N}

(c)

2\,\text{N}

(d)

6\,\text{N}

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