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

a car is traveling at 40.0 m/s. the drivers sees an emergeny ahead and 0.50 s later slams on the brakes. the acceleration of the car is -4.0 m/s^2.

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.

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