What is the freezing point of water in kelvin, celsius and fahrenheit?

The consumption of fossil fuels could be

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.

What is the average speed of a car that travels 40mph for 1 hour and 60 mph in another hour will mark brainliest