a photographer inside a helicopter which is descending vertically at 15m/s at an altitude of 55 meters accidentally dropped his camera. how long will it take the camera to reach the ground.

Answer 1

the free-fall equation is ... h = -1/2 g t^2 - 15 t + 55
... g = 9.8

solve for t ... the positive solution

Answer 2

2.14

Answer 3

2.15