A box containing food supplies for a refugee camp was dropped from a helicopter flying horizontally at a constant elevation of 414.1 m. If the box hit the ground at a distance of 95.3 m horizontally from the point of its release, ...

Question

a) what was the speed of the helicopter?

b) with what speed did the box hit the ground?

Answer 1

a. h = 0.5g*Tf^2.
h = 414.1 m.
g = 9.8 m/s^2.
Tf = ? = Fall Time.

Dx = Xo*Tf.
Dx = 95.3 m.
Xo = ? = Initial hor. speed.

b. Y = Yo + g*Tf.
Yo = 0.

Y = ? = Ver. component of total velocity.

Speed = Sqrt(Xo^2 + Y^2).