Cameroon GCE A-Level Physics Practice Questions - Cameroon General Certificate Of Education Advanced Level Physics (Subject Code 0780) Exam

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A ball is projected horizontally at $20\text{ m s}^{-1}$ from the top of a cliff of height $45\text{ m}$. Taking $g = 10\text{ m s}^{-2}$ and neglecting air resistance, what is the speed of the ball just before it strikes the ground?

30 m s^-1 36 m s^-1 50 m s^-1 25 m s^-1

Correct Answer:

36 m s^-1

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