Question

The propeller of an airplane is 9 feet in diameter. What is the speed of the tip of a propeller blade if the angular velocity of the propeller is 50 radians per second?

Answer 1

1. Calculate the length of 1 full rotation 2. Calculate how much rotations per second 3. Multiply.
it's 225 feet per second

Answer 2

Angular velocity and linear velocity are related by the equation:
v = ωr; r is the radius
v = 50 x 9/2
v = 225 feet per second