A Ball Is Thrown Vertically Upwards at 19

question 28

Multiple Choice

A ball is thrown vertically upwards at 19.6 m/s.For its complete trip (up and back down to the starting position) ,its average speed is:
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• A) 14.7 m/s.
• B) 9.8 m/s.
• C) 19.6 m/s.
• D) ​4.9 m/s.
• E) ​not given.

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