Monday, March 5, 2012
Surfing For Reaction Distance Car?
Mandy asks…Help! If the speed of a car is increased by 45%, by what factor will its minimum braking distance be increased?If the speed of a car is increased by 45%, by what factor will its minimum braking distance be increased, assuming all else is the same? Ignore the driver's reaction time.Nancy answers:Because of the equation vi^2 = vf^2 + 2ax, it will be related to the square of the velocity. So in this case the velocity is increased to 1.45 times the original velocity, so the distance
