h=v₀t+gt²/2,
gt²+2v₀t-2h=0
Solve for t.
v= v₀+gt
Julie throws a rock vertically upward. From a height of 64.0 meters above thehow ground. The initial velocity of the rock is 31.0 meters per second neglect air resistance
How long does it take for the rock to hit the ground?
What is the velocity of the rock just before it hit the ground?
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