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WAEC Physics 2012 Paper

Question : 14

Total: 47

Solution:

Concept:

Acceleration is produced when a resultant force acts on a mass, as given by Newton's second law of motion.

Explanation:

Convert mass from grams to kilograms because the SI unit of mass is kg.

250 \text{ g} = 0.25 \text{ kg}

Use the formula for Newton's second law:

F = ma

Rearrange to find acceleration:

a = \frac{F}{m}

Substitute the given values:

a = \frac{15}{0.25}

a = 60 \ \text{m/s}^2

Answer:

Magnitude of acceleration is

60.00 \ \text{ms}^{-2}

Correct option: D.

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