A Ball Is Thrown at an Angle Of $45 ^ { \circ }$

A ball is thrown at an angle of $45 ^ { \circ }$ to the ground. If the ball lands $30$ m away, what was the initial speed of the ball? Let $g = 9.82 \mathrm {~m} / \mathrm { s }$ .

A) $v _ { 0 } \approx 17 \mathrm {~m} / \mathrm { s }$
B) $v _ { 0 } \approx 22 \mathrm {~m} / \mathrm { s }$ .
C) $v _ { 0 } \approx 42 \mathrm {~m} / \mathrm { s }$ .
D) $v _ { 0 } \approx 27 \mathrm {~m} / \mathrm { s }$
E) $v _ { 0 } \approx 27 \mathrm {~m} / \mathrm { s }$ .

Correct Answer:

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