A 2.0-kg projectile moves from its initial position to a point that is displaced 20 m horizontally and 15 m above its initial position. How much work is done by the gravitational force on the projectile?
A. +0.29 kJ
B. ?0.29 kJ
C. +30 J
D. ?30 J
E. ?50 J
Answer: B
Physics & Space Science
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