A typical automobile under hard braking loses speed at a

Reference no: EM13634683

A typical automobile under hard braking loses speed at a rate of about 6.4 m/s2; the typical reaction time to engage the brakes is 0.48 s. A local school board sets the speed limit in a school zone such that all cars should be able to stop in 3.9 m.

(a) What maximum speed does this imply for an automobile in this zone?

(b) What fraction of the 3.9 m is due to the reaction time?

Reference no: EM13634683

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