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BECE Science 2010 Paper

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Question : 35

Total: 40

A load of 10 N is moved through a distance of 2 m. Calculate the work done.

5 J
10 J
20 J
50 J

Solution:

Concept:

Work done is the product of force and the distance moved in the direction of the force.

Explanation:

Use the formula:

W = F \times s

Given:

F = 10\ \mathrm{N}

and

s = 2\ \mathrm{m}

Substitute the values:

W = 10 \times 2

W = 20\ \mathrm{J}

Since

1\ \mathrm{N \cdot m} = 1\ \mathrm{J}

, the work done is

20\ \mathrm{J}

.

Answer:

The work done is

20\ \mathrm{J}

, which matches option C.

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