WAEC Physics 2023 Objective — Question 48
Question 48 of 50 from the West African Examinations Council (WAEC) Physics 2023 Objective paper, with the correct answer and a full explanation.
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The ratio of maximum range to maximum height of a projectile is 4. Determine the angle of projection.
- A. 0°
- B. 30°
- C. 40°
- D. 60°
Explanation
Given Rmax:Hmax=4, using Rmax=u²/g and Hmax=u²sin²θ/2g, solving gives sin²θ=1/2, so θ=sin⁻¹(√2/2)=45°, a value between the given options C and D.
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