Physics

Problem

A girl pushes a suitcase along a platform with a force of

25\,\text{N}

acting at an angle of

30^{\circ}

below the horizontal. The suitcase moves

4\,\text{m}

horizontally. Calculate the work done by the girl on the suitcase. a)

1.0 \times 10^{2}\,\text{J}

5.0 \times 10^{1}\,\text{J}

8.66 \times 10^{1}\,\text{J}

-8.66 \times 10^{1}\,\text{J}