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2. h = 0.5g*T^2 = 90.
4.9 * T^2 = 90,
T = 4.3 s. = Time in air.
d = Vo * T = 50 * 4.3 = meters.
3. V^2 = Vo^2 + 2g*h = 0 + 19.6 * 90 = 1764,
V = 42 m/s.