A phonograph record 0.30 m in diameter rotates 0.5 times per second. (A) What is its frequency?
(B) What is its period?
(C) What is the linear speed of a point on its rim?
(D) What is the centripetal acceleration of a point on its rim?

Rank the torques on the five doors shown in the figure above from least to greatest. note that the magnitude of all the forces is the same

Ben(55 kg) is standing on very slippery ice when junior(25kg) bumps into him. junior was moving at a speed of 8m/s before the collision and ben and junior embrace after the collision. find the speed of ben and junior as they move across the ice after the collision .

The total amount of energy contained in an object