davisdaniel998ou26yv davisdaniel998ou26yv

02-08-2017
Physics

contestada

A hockey player has an acceleration of −3.1 m/s2. How long does it take him to come to a complete stop from a speed of 13 m/s?

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sergibcnusa sergibcnusa

03-08-2017

Use this formula:

final speed = initial speed + acceleration * time
0 = 13 - 3.1*t, t = 13/3.1 = 4.19354838709677 s = 4.2 seconds, might be enough since ur given 1 decimal place precision

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Simplify: -3(m -2) - 7m