4. A projectile is launched over a flat ground, and the effects of the air resistance are minimal. (a) At what angles wrt the ground should the launcher be oriented so that the projectile's range is half its maximum range? (b) Why are there two possible angles? (c) What are the angles so that the range is zero?

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4. A projectile is launched over a flat ground, and the effects of the air resistance are minimal.
(a) At what angles wrt the ground should the launcher be oriented so that the projectile's range
is half its maximum range?
(b) Why are there two possible angles?
(c) What are the angles so that the range is zero?
Transcribed Image Text:4. A projectile is launched over a flat ground, and the effects of the air resistance are minimal. (a) At what angles wrt the ground should the launcher be oriented so that the projectile's range is half its maximum range? (b) Why are there two possible angles? (c) What are the angles so that the range is zero?
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