Mathematics
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A football is kicked at ground level with a speed of 18.0 m/s at an angle of 35.0 degrees to the horizontal. How much later does it hit the ground?

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(1) Answers
petranajjar

v o = 18 m/s, v o y = v o * sin 35° = 18 * 0.5736 = 10.32437 m/s y = v o y·  t - 1/2 g t² 0 m = 10.32437 m/s t - 1/2 · 9.81 m/s² · t²  /: t 4.905 t = 10.32437 t = 10.32437 : 4.905 t = 2.1 s Answer: A ball will hit the ground after 2.1 seconds.

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