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WAEC WASSCE Physics 2017 past questions and answers

This 2017 WAEC WASSCE Physics set has 40 practice questions. Try these 5 free sample questions, tap a question to reveal the answer and explanation. Then practise the whole 2017 set with instant marking.

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Sample WAEC WASSCE Physics 2017 questions

1. Which physical quantity has the SI unit kg m s^-2?
  1. Force
  2. Work
  3. Pressure
  4. Power

Answer: A. Force

A newton, the SI unit of force, is equivalent to kg m s^-2.

2. A cyclist travels 120 m in 20 s at constant speed; what is the cyclist's speed?
  1. 4 m/s
  2. 6 m/s
  3. 100 m/s
  4. 2400 m/s

Answer: B. 6 m/s

Speed is distance divided by time, so 120/20 = 6 m/s.

3. A vehicle increases its speed uniformly from 4 m/s to 16 m/s in 3 s; what is its acceleration?
  1. 3 m/s^2
  2. 12 m/s^2
  3. 4 m/s^2
  4. 20 m/s^2

Answer: C. 4 m/s^2

Acceleration is change in velocity divided by time, giving (16 - 4)/3 = 4 m/s^2.

4. Two forces of 6 N and 8 N act at right angles to each other; what is the magnitude of their resultant?
  1. 2 N
  2. 14 N
  3. 48 N
  4. 10 N

Answer: D. 10 N

For perpendicular forces, the resultant is sqrt(6^2 + 8^2) = 10 N.

5. A perpendicular force of 12 N acts 0.25 m from a pivot; what is its moment about the pivot?
  1. 3 N m
  2. 12 N m
  3. 48 N m
  4. 0.03 N m

Answer: A. 3 N m

Moment equals force multiplied by perpendicular distance, so 12 x 0.25 = 3 N m.

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