Tuesday

July 29, 2014

July 29, 2014

Posted by **kayle** on Monday, January 27, 2014 at 7:25pm.

1) How fast is the blue car going 8 seconds after it starts?

2) How far does the blue car travel before its brakes are applied to slow down?

3) What is the acceleration of the blue car once the brakes are applied?

4) What is the total time the blue car is moving?

5) What is the acceleration of the yellow car?

- physics -
**bobpursley**, Monday, January 27, 2014 at 7:38pmThis would make an excellent graphic solution...I am certain you have done distance, velocity graphs.

If you want to nerd it out in math,

work it in steps.

1. figure speed at 4.9 seconds, then that is te speed at 8 seconds..

2. how far? figure the distance while accelerating, then the distance at constant speed. add them

3. use Vf^2=Vi^2+2ad solve for d, vi is the speed at brake application.

just work it in steps.

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