(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Part 1:

A motorist is traveling at 17 m/s when he sees a deer in the road 45 m ahead.

If the maximum negative acceleration of vehicle is -7 m/s^2, what is the maximum reaction time (deltat) of the motorist that will allow him to avoid hitting the deer? Answer in units of s.

Part 2:

If his reaction time is 1.71654 s, how fast will he be traveling when he reaches the deer? Answer in units of m/s.

3. The attempt at a solution

I tried to use this equation: X(t)= X (initial)+ V*t + 0.5*a*t^2

but it does not work and I stopped

I can not think of a method to solve it

Please help

Thanks

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# Homework Help: A motorist avoiding hitting a deer

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