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

Name: 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
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Question

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

Quizplus · Accepted Answer

The Answer is C

When You Throw a Pebble Straight Up with Initial Speed 2V\sqrt { 2 } V2​V

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