A child is sledding. He starts at the top of the hill with a velocity of zero, and 3 seconds later he is speeding down the hill at 12 meters per second. What is the child's acceleration?

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09-02-2015
Physics

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A child is sledding. He starts at the top of the hill with a velocity of zero, and 3 seconds later he is speeding down the hill at 12 meters per second. What is the child's acceleration?

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AL2006 AL2006 · Answer 1 · 2015-02-09T18:35:52-05:00

AL2006 AL2006

09-02-2015

Magnitude of acceleration = (change of speed) / (time for the change) =

(12 m/s - 0) / (3 sec) =

12/3 = 4 m/s²

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