A rock is rolled in the sand.It starts at 6.0 m/s,moves in a straight line for a distance of 4.5 m,and then stops.What is the magnitude of the average acceleration?
A) 1.7 m/s2
B) 4 m/s2
C) 1.5 m/s2
D) 0.3 m/s2
E) 8 m/s2
Correct Answer:
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