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OpenStudy (anonymous):
A 3 kg block is moving to right with a speed of 4 m/s. Two seconds later it is moving to the left with a speed of 8 m/s. What is its acceleration during this time?
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OpenStudy (anonymous):
Just find out the average acceleration............ answer is 4-(-8)=12 12/2=6
OpenStudy (anonymous):
And the direction of average acceleration is rightwards as I have chosen rightwards to be positive
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