Translation of section B 2B

Our questions are about exercise, using the Internet and watching TV. Here is the result. We found that only 15% of our students exercise every day. 4500 points is 4 to 6 times more than practice one

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13. There are several ways to measure acceleration with dot timer In even and odd time periods?
14. What is the formula for measuring acceleration with dot timer?
15. The formula of measuring acceleration with dot timer What is the general formula of acceleration measured by dot timer? The acceleration of N segments is required! For example, when n = 6, there are six segments S1, S2, S3, S4, S5, S6!
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