JAMB Physics 2023 Objective — Question 7
Question 7 of 40 from the Joint Admissions and Matriculation Board (JAMB) Physics 2023 Objective paper, with the correct answer and a full explanation.
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A car travelling at 50 m/s overcomes frictional resistance of 100 N. Power developed: (1hp=0.75KW)
- A. 6.7 hpCorrect
- B. 4 hp
- C. 3.3 hp
- D. 14.1 hp
Explanation
P=Fv=100×50=5000 W=5 kW; in hp=5/0.75≈6.7 hp.
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