If a jet plane doubles the speed, the drag force on the jet plane
A) decreases by half.
B) is unchanged.
C) is doubled.
D) is quadrupled.
E) depends how many passengers the plane is carrying.

Question

Quizplus · Accepted Answer

The drag force on an object moving through a fluid is proportional to the square of its speed. Therefore, if the speed of the jet plane doubles, the drag force will increase by a factor of four, or be quadrupled.

If a Jet Plane Doubles the Speed, the Drag Force