Captain American bails out of an airplane and falls 50 meters without friction. When the parachute opens, he decelerate at 2.0m/s2. He reaches the ground with a speed of 3.0 meters/sec.
a.) How long is captain america in the air?
a= -9.8m/s2 ??????? (this is where I am confused because of the deceleration of 2.0m/s2.
d=do + Vo +1/2at2