Asked by Thlologelo

A tower is 24m high. A stone is projected upwards from the tower with initial velocity of 24,5 m/s. Calculate how long it would take for the stone to reach the ground at the foot of the tower.
Answered by Steve
you know that the height at time t seconds is

h(t) = 24 + 24.5t - 4.9t^2

so, just solve for t when the stone hits the ground (its height is zero).
Answered by Mothaba
3,663sec & 1,337sec
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