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WAEC Physics 2017 Paper

Question : 2

Total: 50

Which of the following is the dimension for impulse?

Solution:

Concept:

Impulse is the product of force and time, so its dimension is obtained by multiplying the dimensions of force and time.

Explanation:

Impulse

= \text{Force} \times \text{Time}

Dimension of force is

MLT^{-2}

Dimension of time is

T

Therefore, Impulse

= MLT^{-2} \times T = MLT^{-1}

This matches option A.

Answer:

MLT^{-1}

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