A Boy Throws a Rock with an Initial Velocity of 2.15

question 26

Multiple Choice

A boy throws a rock with an initial velocity of 2.15 m/s at 30.0° above the horizontal. If air resistance is negligible, how long does it take for the rock to reach the maximum height of its trajectory?

• A) 0.110 s
• B) 0.194 s
• C) 0.215 s
• D) 0.303 s

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