Projectile Motion: A boy throws a rock with an initial velocity of 3.13 m/s at 30.0° above the horizontal. How long does it take for the rock to reach the maximum height of its trajectory if air resistance is negligibly small and g = 9.80 m/s2?
A. 0.160 s
B. 0.282 s
C. 0.313 s
D. 0.441 s
Answer: A
Physics & Space Science
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