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1. |
An athlete in the Olympic game covers a distance of 100m in 10s. His kinetic energy can be estimated in the range? |
A. | 200J 500J |
B. | 2 10<sup>5</sup>J 3 10<sup>5</sup>J |
C. | 20000J 50000J |
D. | 2000J 5000J |
Answer» E. | |