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Myung
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Homework Statement
A hemispherical dome has a diameter of 100m. A search light was placed at point A as shown at the middle of the dome at B. A balloon was released vertically at a velocity of 4m/s. How fast will the shadow of the balloon move alone the roof if it traveled 25 m vertically.
Image link:http://bit.ly/rem8PG
Homework Equations
The Attempt at a Solution
I don't know how to start this. I don't understand the nature of the shadow and why did it bounce off the wall like as shown in the image.
What relationship should i use? Please help me to solve this step by step. I'm willing to learn.
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