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March 27, 2015

Homework Help: physics

Posted by amanda and leah on Wednesday, September 12, 2012 at 10:48pm.

a typical automobile has a maximum deceleration of about 7m/s2, the typical reaction time to engage the brakes is 0.50s. A school board sets the speed limit in a school zone to meet the condition that all cars should be able to stop in a distance of 4 m. a) what maximum speed should be allowed for a typical automobile? b) What fraction of the 4 m is due to the reaction time?

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