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Q. |
If a snail crawls 12 cm in 60 s then it's average speed in mm s -1 is {{}} |
A. | 2 mm s -1 |
B. | 5 mm s -1 |
C. | 10 mm s -1 |
D. | 20 mm s -1 |
Answer» A. 2 mm s -1 |
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