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December 22, 2014

December 22, 2014

Posted by **Taylor** on Monday, September 6, 2010 at 9:52pm.

1) How fast is the car going at the end of the breaking period?

2) How far has the car gone from its start?

- physics -
**bobpursley**, Monday, September 6, 2010 at 10:04pmLets look at momentum.

The impulse equation ought to equal the final momentum.

F1*time1+F2*time2=mass*vfinal

but Force= mass*acceleration.

mass*1.8*4.9-mass*1.7*1.5= mass*Vfinal

solve for Vfinal.

How far?

distance= avg velocity*time

= Vf/2 * (1.5+4.9)

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