The helicopter steadily descends vertically downward at a speed of 10 m / s. A packet falls out of it, which reaches

The helicopter steadily descends vertically downward at a speed of 10 m / s. A packet falls out of it, which reaches the ground in 5 s. At what height is the helicopter at the moment when the packet drops. At what speed does the packet hit the ground?

Task data: V1 (uniform speed of descent of the helicopter, initial speed of the packet) = 10 m / s; t (duration of the packet falling) = 5 s.

Constants: g (acceleration of gravity, packet) ≈ 10 m / s2.

1) The height of the helicopter at the moment the package starts to fall (the distance traveled by the package): H = V1 * t + 0.5 * g * t ^ 2 = 10 * 5 + 0.5 * 10 * 5 ^ 2 = 175 m.

2) The speed of the packet at the moment of impact: V2 = V1 + g * t = 10 + 10 * 5 = 60 m / s.

Answer: The helicopter was at an altitude of 175 m, the packet speed is 60 m / s.