Explain two ways you could reduce the friction between two surfaces

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.

How many atoms of nitrogen are in the chemical formula ni(w on

What distance does a car travel as its speed changes from 0 to 20 m/s in 17 s at constant acceleration?