Respuesta :

mathssydney
r = [tex] \frac{g t^{2} }{2} [/tex]
r - displacement or height
t - time taken
g = 10 m/s-2
t = square root from 2r/g = [tex] \sqrt{ \frac{2 x 12}{10} } [/tex] = 1.5 seconds

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