A basketball player is standing on the floor 14.5 m away from the basket. The height of the basket is 3.15 m, and he shoots the ball at 42.0° with the horizontal from a height of 1.92 m. At what speed must the player shoot the ball so that it goes through the hoop without striking the backboard?

If the spring constant k of a pogo stick is 3500 n m and the weight of the person on the pogo stick is 700 n, how much is the spring in the botom of the pogo stick compressed?

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?

What are the necessary conditions for fusion?