(I) A bullet of 1810^1 g launched vertically upwards with a muzzle velocity whose modulus is 25...
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Question:
(I) A bullet of 1810^1 g launched vertically upwards with a muzzle velocity whose modulus is 25 m/s reaches the maximum height of 21 m. Find: (a) its kinetic energy variation; (b) work done by gravitational force. (c) Are the two calculated values equal? Explain why.
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