An automobile traveling along a straight road increases its speed from 37 ft/s to 54 ft/s in 180 ft. If the acceleration is constant, how much time elapses while the auto moves the 180 ft?
Answer in units of s.

Awind turbine is rotating counterclockwise at 0.5 rev/s and slows to a stop in 10 s. its blades are 20 m in length. (a) what is the angular acceleration of the turbine? (b) what is the centripetal acceleration of the tip of the blades at t=0s? (c) what is the magnitude and direction of the total linear acceleration of the tip of the blades at t=0s?