WAEC Physics 2014 Theory — Question 1
Question 1 of 22 from the West African Examinations Council (WAEC) Physics 2014 Theory paper, with the correct answer and a full explanation.
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PART 1 — Answer any five questions from this part. 1. A particle is projected horizontally at 10ms⁻¹ from the top of a tower 20m high. Calculate the horizontal distance travelled by the particle when it hits the level ground. [g=10ms⁻²]
Model answer
Time to fall: h=½gt² ⟹ 20=½(10)t² ⟹ t²=4 ⟹ t=2s Horizontal distance = horizontal velocity × time = 10×2 = 20m
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