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Item 1
1 of 7
You drop a ball from a height of 1.8 m, and it
bounces back to a height of 1.2 m
Part A
What fraction of its initial energy is lost during the bounce?
Express your answer using two significant figures.
Elost/Enitial =
Submit
Request Answer
Part B
What is the ball's speed just before the bounce?
Express your answer to two significant figures and include the appropriate units.
HA
圖] ?
Vbefore =
Value
Units

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