A0.12-m-radius grinding wheel takes 5.5 s to speed up from 2.0 rad's to 11.0 rad/s. what is the wheel's average angular acceleration? a. 9.6 rad's b. 4.8 radis c. 1.6 rad/s d. 0.33 rad/s

Aferris wheel is a vertical, circular amusement ride with radius 9 m. riders sit on seats that swivel to remain horizontal. the ferris wheel rotates at a constant rate, going around once in 9 s. consider a rider whose mass is 56 kg. at the bottom of the ride, what is the perpendicular component of the rate of change of the rider's momentum? at the bottom of the ride, what is the vector force exerted by the seat on the rider?

Edward tolman explained the results of his study by theorizing that the rats were learning about the maze during every trial but they a. were agitated because other groups were getting reinforcement b. could not remember how to demonstrate it without reinforcement c. were not motivated to demonstrate it without reinforcement d. seemed to be too lazy to actually work without reinforcement

Which articulations allow for greatest range of motion?