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1. |
A tennis ball dropped from a height of 2 m rebounds only 1.5 m after hitting the ground. What fraction of its energy is lost in the impact |
A. | \[\frac{1}{4}\] |
B. | \[\frac{1}{2}\] |
C. | \[HSO_{4}^{-}\] |
D. | \[\frac{1}{8}\] |
Answer» B. \[\frac{1}{2}\] | |