A 1000 kg car comes to as stop without skidding. The cars breaks do 50,000j of work to stop the car

Afigure skater is rotating at a rate of 200 revolutions per minute. what is the angular speed, in units of rad/s? 20.9 12000 200 3.33

If the ama of the inclined plane below is 2, calculate the ima and efficiency. ima = efficiency =

An athlete is holding 24 lb of weights at a height of 6 inches above the stack as shown. to lower the weights, she applies a constant force of 5 lb to the handle. determine the velocity of the weights immediately before they hit the stack.