To Determine the Height of a Flagpole,Abby Throws a Ball

question 21

Multiple Choice

To determine the height of a flagpole,Abby throws a ball straight up and times it.She sees that the ball goes by the top of the pole after 0.50 s and then reaches the top of the pole again after a total elapsed time of 4.1 s.How high is the pole above the point where the ball was launched? Neglect air resistance.

• A)10 m
• B)13 m
• C)16 m
• D)18 m
• E)26 m

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