# Rocky launcher

Becky is trying to throw a $$1\text{ kg}$$ rock as far as possible. She threw the rock 4 times, at an angle of $$20 ^ \circ, 40 ^ \circ, 60 ^ \circ$$ and $$80 ^ \circ$$ with respect to the horizontal. Which of those resulted in the rock traveling the furtherest horizontally?

Details and Assumptions

• The rock completely stops motion on its first contact with the ground.
• Ignore any air resistance.
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