When You Throw a Pebble Straight Up with Initial Speed $\sqrt { 2 }$

question 63

Multiple Choice

When you throw a pebble straight up with initial speed V, it reaches a maximum height H with no air resistance. At what speed should you throw it up vertically so it will go twice as high?

• A) 16V
• B) 8V
• C) 4V
• D) 2V
• E) \(\sqrt { 2 }\) V

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