A 1938 British Spritfire flying above a river travels a horizontal path at 162 m/s as it drops a friendly package from a height of 444m how long was the friendly package in the air?

also, how far did it travel horizontally before landing, horizon + vehicle velocity as it hits the ground, and velocity as it hits the ground.

Consider the growth of a 20-nm-diameter silicon nanowire onto a silicon wafer. the temperature of the wafer surface is maintained at 2400 k. assume the thermal conductivity of the silicon nanowire is 20 wm-1k-1 and all its surfaces including the tip are subjected to convection heat transfer with the coefficient h = 1×105 wm-2k-1 and t∞ = 8000 k. when the nanowire grows to l = 300 nm, what is the temperature of the nanowire tip (t (x =