[Knight Templar]

lemme check

*hops in car*

[Knight Templar]

well ok.. i actually did the math. it's either : The car stops in 6 seconds , 76 meters away, so yes. or it's no i messed up the "no" so thats why i think the first one.

CP, back me up

[vadar_1]

Originally posted by CODEDOG ND
If a car is going 70 k/m and is 100 meters from a stop sign, and is decelerating at 4 m/s/s.  Is it able to stop within 100 meters?

whats the mass of the car, force of friction between the tires and the pavement, and why is it in k/m?

[Knight Templar]

why is it in k/m?

because he had to track bambi to Europe/Canada, and couldn't do his Math homework because his excuse was "I only know the metric system now" ... i don't need don't explain his techers response

[CP5670]

If a car is going 70 k/m and is 100 meters from a stop sign, and is decelerating at 4 m/s/s.  Is it able to stop within 100 meters?

I'm not sure of the units for the velocity but it looks like it might be km/min. That's one heck of a fast car though. Anyway, it is not going to be able to stop seeing as it is going at an incredible speed. (almost 2600mph) Perhaps you meant something else for the speed?

This is actually a physics question, but those are pretty nice too.

[Knight Templar]

CP, check that again..  70 Kilometers an hour.. that's like 40 something miles an hour i think..

[CP5670]

Is it per hour? I thought it was per minute...

[Knight Templar]

Am i right then, if its per hour?

[CP5670]

Well, I will assume for the moment that it is km/h and that there are no retarding forces due to friction or air resistance. This stuff can just be plugged into one of the usual kinematics equations for constant acceleration:

v₁²=v₀²+2ax
x=30625/648=47.2608

I think it should be able to stop before getting halfway there. Might have messed up there though; been doing too much pure math lately.

[Knight Templar]

stop before getting half way there as in 76 meteres away?

I made a nice lil' chart, i could show it to you in Excel form if you like?