Physics

Problem

A football is kicked from ground level with an initial speed of

20\,\text{m s}^{-1}

and returns to the same level after travelling a horizontal distance of

30\,\text{m}

. Take

g = 9.8\,\text{m s}^{-2}

. a. (i) Calculate the possible angle(s) of projection. b. (ii) For each angle obtained in (i), compute the corresponding maximum height reached by the football.

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