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March 27, 2015

March 27, 2015

Posted by **jel** on Sunday, September 30, 2007 at 4:09pm.

a. what distance will the car travel before it stops?

b. if the driver was able to apply the brakes instantaneously without a reaction time, over what distence would the car stop?

c. assume your car was traveling at 30.0 m/s instead. without performing any calculations, would the answer now be less than, equal to or larger than before? explain your answer.

- physics -
**bobpursley**, Sunday, September 30, 2007 at 4:58pmvi=40m/s

timedelay=.5s

a= -4m/s^2

vf^2=vi^2+2(-4)d

solve for d when vf=0, then

d= vi*t -1/2*4*(t-.5)^2

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