Test Index

WAEC Physics 2016 Paper

Question : 7

Total: 47

Solution:

Concept:

Work done by a constant force equals force multiplied by distance, or the area under a force-distance graph.

Explanation:

From the graph, the force acting on the block is

20\,\text{N}

The block is moved through a distance of

5\,\text{m}

Work done is given by

W = F \times d

So,

W = 20 \times 5

Therefore,

W = 100\,\text{J}

Answer:

100\,\text{J}

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