Headlight flashing faces test as free speech in FL

[DrPizza]

If I am doing 80 in a BMW and you are doing 60 in a Ford Excursion, I can stop and/or swerve faster than you can. Even worse if you are pulling a boat or something like that. Simple physics tells you that the speed of an object is not the only factor in the distance it will take that object to stop.

Really? Simple physics actually WOULD tell you that speed of an object is the only factor in the distance it would take that object to stop - given all else equal (equal coefficient of friction, etc.) Actually, not even all else. If the mass were doubled, simple physics would say that the frictional forces were also doubled. Thus a 4 ton vehicle and a 2 ton vehicle going the same speed, with tires of equal coefficients of friction, going the same speed, would require the same stopping distance.
Simple physics would use these formulas:
force of friction = normal force times coefficient of friction
change in momentum = mass times change in velocity = impulse = stopping force multiplied by time.
Thus, time = mass times change in velocity divided by force.
But, double the mass, and you double the force, so changing the mass would have no effect on changing the time. THAT'S simple physics.

It's complicated physics that says otherwise. Not simple physics.

 

[dank69]

Really? Simple physics actually WOULD tell you that speed of an object is the only factor in the distance it would take that object to stop - given all else equal (equal coefficient of friction, etc.) Actually, not even all else. If the mass were doubled, simple physics would say that the frictional forces were also doubled. Thus a 4 ton vehicle and a 2 ton vehicle going the same speed, with tires of equal coefficients of friction, going the same speed, would require the same stopping distance.
Simple physics would use these formulas:
force of friction = normal force times coefficient of friction
change in momentum = mass times change in velocity = impulse = stopping force multiplied by time.
Thus, time = mass times change in velocity divided by force.
But, double the mass, and you double the force, so changing the mass would have no effect on changing the time. THAT'S simple physics.

It's complicated physics that says otherwise. Not simple physics.

Great, now the mouth breathers that piss their pants everytime they accidentally get on the highway are going to think you just proved their point.