A rock is tossed straight up with a velocity of 39 m/s. When it returns, it falls into a hole 10.7 m deep. What is the rocks velocity as it hits the bottom of the hole?
how long does it take?
39t - 4.9t^2 = -10.7
knowing t,
v = 39 - 9.8t
39t - 4.9t^2 = -10.7
knowing t,
v = 39 - 9.8t