A body is projected horizontally from the top of a cliff 45m above the ground. if the body lands at a distance 30m from the foot of the cliff, calculate the speed of projection. [g = 10ms‾²]

By: |Published on: Mar 13|Categories: Physics WAEC| 0 comments

A. 10ms‾¹
B. 15ms‾¹
C. 20ms‾¹
D. 30ms‾¹

Correct Answer: Option D

D. 30ms‾¹

Explanation

V² = U² + 2gh

= 0² + 2 x 10 x 45 = 30

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