A rock is thrown upward with a velocity of 20 meters per second from the top of a 37 meter high cliff, and it misses the cliff on the way back down. When will the rock be 44 meters from the water, below? Round your answer to two decimal places.

Answer 1

h = 1/2 g t^2 + v t + Ho

44 = -4.9 t^2 + 20 t + 37

solve the quadratic for t