Which of the following is an example of an unbalanced force? A. Book sitting on a table
B. Car sitting in the garage
C. Person on an elevator going down
D. Person leaning on a wall

20. threshold braking in the vehicle's braking system occurs when a. the brake pedal is pushed, heel on floorboard, with full foot pressure. b. the brakes are exerting full braking power, without traction loss. c. the driver begins pushing down the brake pedal, with moderate slowdown. d. the brakes just begin to take hold with a gradual slowdown.

Asher cycles 12 miles in 16 hours. what is his speed?

The charge on a charged sphere is: a)concentrated at its centerb)distributed uniformly throughout its volumec)clustered on its centerd)distributed uniformly over its surface