In a pendulum system, does the kinetic exceed the potenial energy? explain.

Which of the following is an example of units for speed

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?

The three classes of rocks are sedimentary, metamorphic, and igneous. how are rocks classified into one of these three groups?