Physics
posted by Anonymous .
A parachutist descending at a speed of 10.0 m/s loses a shoe at an altitude of 40.0 m. (Assume the positive direction is upward.) when does the shoe reach the ground??

hf=hi+vi*t4.9t^2
vi=10 hf=0 hi=40 solve for time t 
...and the answer equals??