A 20-Kg Projectile Moves from Its Initial Position to a Point

question 3

Multiple Choice

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

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