Acceleration Formula of dot timer Formulas related to s and t

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• 1. Clock tape What's special about this t? (I mean, for example, how many squares of 0.02 seconds are used for x4-x3 and x4-x1, respectively)?
• 2. A formula for calculating the acceleration measured by physical dot timer in grade one of senior high school I remember it was a delta x = at ^ 2 Is it this one?
• 3. Find the acceleration calculation formula of dot timer, and the derivation process (I am a senior one)
• 4. 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!
• 5. What is the formula for measuring acceleration with dot timer?
• 6. There are several ways to measure acceleration with dot timer In even and odd time periods?
• 7. If an object moving in a straight line with constant acceleration and non-zero initial velocity arrives at point a through displacement S1 in time t, and then arrives at point B through displacement S2 in time t, the following judgment is correct () A. The velocity of the object at point a is S1 + s22tb. The acceleration of the object is 2s1t2c. The acceleration of the object is S2 − s1t2d. The velocity of the object at point B is 2s2 − s1t
• 8. If the displacement of an object moving in a straight line with uniform velocity is s in time t, and the instantaneous velocity in the middle of the time is V1, and the instantaneous velocity in the middle of the displacement is V2, then () A. Whether it is uniform acceleration or uniform deceleration, V1 < V2b. Whether it is uniform acceleration or uniform deceleration, V1 > V2C. Whether it is uniform acceleration or uniform deceleration, V1 = v2d. When it is uniform acceleration, V1 < V2, when it is uniform deceleration, V1 > v2
• 9. Translation of section B 2B
• 10. The greatest common factor of 54 and 36
• 11. On the right is the timetable of train T1 / T2 running between Beijing West and Changsha Suppose that the train arrives and leaves on time and moves in a straight line (1) What is the average speed of the train from Changsha to Wuchang? (2) What is the average speed of the train from Zhengzhou to Yueyang? (3) What's the speed of train T1 at 5:05? What's the speed of the whole journey? Beijing West ↓ Changsha T1 times Distance from Beijing West (km) ↑ Changsha T2 times 17: Beijing West 23:29 23:35 / x09690 / X09 Zhengzhou / x091:45 1:39 5:01 5: 09 / x091226 / X09 Wuchang / x0920:12 20:04 7:12 7: 18:58 17:56 8: 38 / x091588 / X09 Changsha / x0916:36
• 12. If t2-t1 = t / 4, then the distance between two points AB may be a.0 B. equal to a C. greater than a D. less than a
• 13. If the length of the spring is the same at T1 and T2, then it is certain that the oscillator will vibrate at these two moments () A. Equal displacement and opposite direction B. equal velocity and same direction C. equal acceleration and same direction D. equal velocity and opposite direction
• 14. The velocity of the spring oscillator is V at T1 and V at T2, and the direction is the same. It is known that (t2-t1) is less than the period T, then (t2-t1) () A. May be greater than a quarter of a cycle B. may be less than a quarter of a cycle C. must be less than a half of a cycle D. may be equal to a half of a cycle
• 15. The results are as follows: 1. The spring oscillator moves harmoniously, the velocity at T1 is V, the velocity at T2 is V, and the direction is the same. Given that (t2-t1) is less than the period T, then (t2-t1) The results are as follows: 1. When the spring oscillator moves harmoniously, the velocity is V at T1 and V at T2, and the direction is the same. It is known that (t2-t1) is less than period T, then (t2-t1) () A. May be greater than a quarter of a cycle B. may be less than a quarter of a cycle C. It must be less than half period D. it may be equal to half period D Why don't you choose D?
• 16. This paper tries to prove that the displacement difference of an object moving in a straight line with uniform speed change from any moment to every continuous and equal time interval T forms an arithmetic sequence
• 17. The difference △ s between the displacements of an object moving in a straight line at a constant speed in any two consecutive equal times is a measure, and △ s =? Proves that:
• 18. It is proved that the displacement difference of an object moving in a straight line with uniform speed change in any two consecutive equal times is a fixed value
• 19. It is proved that: (1) if the difference of displacement of an object moving uniformly in a straight line is a fixed value in any two continuous equal time, and the acceleration is a, the continuous equal time is t, and the difference of displacement is △ x, then △ x = at2. (2) in the uniformly variable linear motion, the instantaneous velocity at the midpoint of displacement is VX2 = V20 + v2t2
• 20. The object starts to move in a straight line with an initial velocity of 5. Given that the acceleration at any time t is the square of T plus 2 times T, please express the displacement s as a function of time t Function problem