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JennieBP
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A car traveling at 30 m/s north slows to a stop in 15 seconds. What is the acceleration? PLEASE HELP

A car traveling at 30 m/s north slows to a stop in 15 seconds. What is the acceleration? PLEASE HELP class=

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The answer is C..........

osprey2015

The "acceleration" is negative so it's a deceleration. Change of speed = 30 m/s. Time taken for change 15 seconds Deceleration 30m/s^-1 divided by 15 seconds which is 2m/s per second ...
Nice and gentle, and so not the "modern way"

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