From a distance of 20 centimeters, a miniature toy catapult fires a shot.  With the marble on top, the building stands 13.5 cm tall, while the marble in the catapult stands 7 cm tall. If the mini toy catapult launches the marble at a 0 degree angle, what is the initial velocity of the marble required to strike the other marble at the top of the building?  How much time do we require?  How much energy/force is required to

Glencoe Physics: Principles and Problems, Student Edition
1st Edition
ISBN:9780078807213
Author:Paul W. Zitzewitz
Publisher:Paul W. Zitzewitz
Chapter6: Motion In Two Dimensions
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From a distance of 20 centimeters, a miniature toy catapult fires a shot. 
With the marble on top, the building stands 13.5 cm tall, while the marble in the catapult stands 7 cm tall. If the mini toy catapult launches the marble at a 0 degree angle, what is the initial velocity of the marble required to strike the other marble at the top of the building? 
How much time do we require? 
How much energy/force is required to launch the catapult.
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