An airplane is flying due north in still air at a velocity of 240 km/h. Suddenly the aircraft encounters a cross wind from the west whose vel ocity is 70 km/h. If the pilot does not alter his controls, what will be his new direction and new ground speed? Has the aircraft been accelerated?

Question

anonymous · Answer

A vector diagram may help

anonymous · Answer

From there, use pythagoras theorem, 240^2 + 70^2 = x^2, solve for x

anonymous · Answer

acceleration = change in velocity, even if no change in speed