A Tennis Ball Is Thrown from Ground Level with Velocity

question 13

Multiple Choice

A tennis ball is thrown from ground level with velocity directed 30° above the horizontal.If it takes the ball 0.5 s to reach the top of its trajectory, what is the magnitude of the initial velocity?

• A)4.9 m/s
• B)9.8 m/s
• C)11.3 m/s
• D)19.6 m/s
• E)34.4 m/s

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