A Rock Is Rolled in the Sand

question 49

Multiple Choice

A rock is rolled in the sand.It starts at 5.0 m/s,moves in a straight line for a distance of 3.0 m,and then stops.What is the magnitude of the average acceleration?

• A)1.8 m/s²
• B)4.2 m/s²
• C)5.4 m/s²
• D)6.2 m/s²

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