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Question
A 5-kg projectile is fired over level ground with a velocity of 200 m/s at an angle of 25°above the horizontal. Just before it hits the ground its speed is 150 m/s. Over the entire trip the change in the thermal energy of the projectile and air is:
A) +6300 J
B) -6300 J
C) +44,000 J
D) -44,000 J
E) 0 J
Answer
This answer is hidden. It contains 1 characters.
Related questions
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