A \( 2.0-\mathrm{kg} \) projectile is fired with initial velocity components \( v_{o r}=30 \math...

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A \( 2.0-\mathrm{kg} \) projectile is fired with initial velocity components \( v_{o r}=30 \mathrm{~m} / \mathrm{s} \) and \( v_{o y}=40 \mathrm{~m} / \mathrm{s} \) from a point on the earth's surface. Neglect any effects due to air resistance.
How much work was done in firing the projectile?
(A) \( 900 \mathrm{~J} \)
(B) \( 2500 \mathrm{~J} \)
(C) \( 1600 \mathrm{~J} \)
(D) \( 4900 \mathrm{~J} \)
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