Which of the following is an example of a device that uses a wheel and axle? Check all that apply
A. frisbee
B. light bulb
C. doorknob
D. bicycle
(multiple answers)

Acar travels along a highway with a velocity of 24 m/s, west. the car exits the highway; and 4.0 s later, its instantaneous velocity is 16 m/s, 45° north of west. what is the magnitude of the average acceleration of the car during the four-second interval?

What is the rate of 12 liters of water moving through a water hose in 4.0 minutes?

Glass has a hardness that is in the middle of the hardness scale. what is the hardness of glass?