Hello, twistedmexican!

You're expected to know the "free fall" formula: .A photographer in a helicopter ascending vertically at a constant rate of 12.5 m/s

accidentally drops a camera out the window when the helicopter is 60 m above the ground.

(a) How long will it take the camera to reach the ground?

(b) What will it's speed be when it hits?

. . where: .

We have: .

. . Hence: .

(a) When the camera reaches the ground, its height is 0.

So we have: .

. . a quadratic equation: .

. . which factors: .

. . and has the positive root: .

It takes 5 seconds for the camera to crash to the ground.

(b) The velocity is given by the derivative: .

At

The speed at impact is 36.5 m/s . . . downward, of course.