Can someone answer these??

need answer asap!!

Arock collection comes from which part of earth?

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?

Acar travels in reverse. it covers 150 meters in 12 seconds what is the velocity of the car what is the speed of the car