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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The Answer of 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

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