WAEC Physics 2025 Objective — Question 3
Question 3 of 51 from the West African Examinations Council (WAEC) Physics 2025 Objective paper, with the correct answer and a full explanation.
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The diagram below illustrates the force-displacement of a body. Calculate the work done during the first 20m of motion.
- A. 1000J
- B. 825JCorrect
- C. 750J
- D. 500J
Explanation
Work done = area under the force-distance graph = area of trapezium + area of rectangle = ½(15+50)(20-10) + 50×10 = 325 + 500 = 825J.
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