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

question 152

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