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

question 51

Multiple Choice

A ball is thrown at an angle of $45 ^ { \circ }$ to the ground. If the ball lands $30 \mathrm {~m}$ 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) \(v _ { 0 } \approx 27 \mathrm {~m} / \mathrm { s }\).

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