A boy throws a rock with an initial velocity of 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
Question 2
The acceleration due to gravity on the Moon is only one-sixth of that on Earth, and the Moon has no atmosphere.
If you hit a baseball on the Moon with the same effort (and therefore at the speed and angle) as on Earth, how far would the ball would travel on the Moon compared to on Earth? Neglect air resistance on Earth. A) 1/6 as far as on Earth
B) 36 times as far as on Earth
C) the same distance as on Earth
D) 6 times as far as on Earth
E) as far as on Earth
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