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A skier has an acceleration of 2.5 m/s2. How long does it take her to come to a complete stop from a speed of 18 m/s? A. 3.4 s B. 7.2 s C. 15.5 s D. 0.14 s

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recklessnoah17

The correct answer is B. 7.2

I hope this helps!

Hippalectryon

By definition, the speed is decreased by 2.5 m/s every second. Hence it will be null in \(\frac{18}{2.5}=7.2 s\). Answer B

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