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Aniket rai
Answers (1)
0.25 secs,1.25 secs Given, height = 6 = -16 t 2 + 24t + 1 ⇒ 16 t 2 + 24t + 5 = 0 ⇒ (4t-1) (4t-5) = 0 t = 1 4 , 5 4 or 0.25,1.25 It takes 0.25 secs and 1.25secs for the ball to go up and down respectively.
