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What acceleration takes an object to 8m/s from 20m/s over a period of 3s?is the answer -4?

User Marcelog
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1 Answer

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18 votes

In order to calculate the acceleration, let's use the following formula:


a=(v_2-v_1)/(\Delta t)

Where v2 is the final speed, v1 is the initial speed and Delta t is the period of time.

So, for v2 = 8, v1 = 20 and Delta t = 3, we have:


a=(8-20)/(3)=(-12)/(3)=-4\text{ m/s2}

User Julien Silland
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