Checking Distance Travelled by Car: Is 3.2 km Right?

Thread starter brad sue
Start date Sep 12, 2005
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Car

AI Thread Summary

The discussion revolves around calculating the distance traveled by a car that accelerates uniformly to 120 km/h over 1.6 minutes and then decelerates uniformly to a stop in the same time frame. The user applied the equation x - x0 = 0.5 * a * t^2 + v0 * t to find the acceleration and ultimately calculated the distance as 3.2 km. The correctness of this calculation is questioned, with the user seeking validation. The response indicates that the calculation is indeed correct. The thread emphasizes the importance of using the right formulas for uniform acceleration and deceleration.

Sep 12, 2005

brad sue

I would like to check something.
A car leaves a city along a straight road and accelerates uniformly for 1.6 min until it reaches a speed of 120km/h. It then deccelerates uniformly until it comes to rest again after 1.6min
what is the distance traveled by the car?

I used the equ. x-x_o=.5*a*t²+v_o*t
before I found the acceleration..
I found 3.2 km

Is that right?
Thanks

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Sep 12, 2005

quantumdude

Staff Emeritus

Science Advisor

Gold Member

Right-O.

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