Posted by **Shannon** on Monday, February 14, 2011 at 6:45pm.

A range in a national park is driving at 47 km/h when a deer jumps onto the road 70m ahead of the vehicle . After a reaction of t seconds, the ranger applies the brakes to produce an acceleration of -2.00 m/s^2. What is the maximum reaction time allowed if the ranger is to avoid hitting the deer?

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