A ball rolls up a slope.At the end of three seconds its velocity is 20 cm/s; at the end of eight seconds its velocity is 0 cm/s.What is the magnitude of its average acceleration from the third to the eighth second? A)2.5 cm/s² B)4.0 cm/s² C)5.0 cm/s² D)6.0 cm/s² E)6.67 cm/s²

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The Answer of A ball rolls up a slope.At the end of three seconds its velocity is 20 cm/s; at the end of eight seconds its velocity is 0 cm/s.What is the magnitude of its average acceleration from the third to the eighth second? A)2.5 cm/s² B)4.0 cm/s² C)5.0 cm/s² D)6.0 cm/s² E)6.67 cm/s²

A Ball Rolls Up a Slope