![](data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" viewBox="0 0 72 71" width="72"></svg>)
In physics, which is the greater the velocity at the middle time or the velocity at the middle position,
As shown in the figure, if the motion is uniformly accelerated, then the speed of T2 in the middle position is greater than that of T1 in the middle time. Because the middle position should ensure the same displacement before and after, and show the same area in the figure, then the position must be a little behind the middle time, and the speed corresponding to T2 in the figure is a little larger
Even deceleration is the same. Although the time in the middle is earlier than that in the middle, the object decelerates, so the speed in the middle is also higher than that in the middle
RELATED INFORMATIONS
- 1. The relationship between the velocity at the middle position and the velocity at the middle time If the object moves from a to B in a straight line with uniform speed change, the velocity at the middle position is V1, and the velocity at the middle moment is V2, then the relation of V1V2 is () A. When the object moves at a constant speed, V1 is greater than v2 B. When the object is accelerating uniformly, V1 is less than v2 C. When a body moves at a constant speed, V1 equals v2 D. When the object decelerates uniformly, V1 is greater than v2 Is a multi topic, will be the process!
- 2. There are two formulas for calculating the average velocity in physics. When to use which one ① V = s / T ② v = (V beginning + V end) / 2
- 3. 1. As long as the train is at a certain moment, the instantaneous speed must be 0. 2. What are the calculation formulas of instantaneous speed, average speed and speed? Because I preview it in advance, Don't be surprised to ask naive questions In addition, can you give a calculation of instantaneous velocity and average velocity?
- 4. Senior high school physics requires one to deduce the formula that the speed in the middle is equal to the average speed, Senior high school physics requires one to deduce that the average velocity is equal to the velocity in the middle of the time, and to deduce the formula of displacement,
- 5. Derivation of the formula that the instantaneous velocity at the middle point of time is equal to the average velocity of the whole course Such as the title
- 6. What is the density of NBR?
- 7. Does the secondary vulcanization of NBR O-ring have shrinkage The outer diameter of NBR rectangular ring with an outer diameter of more than 400 is 0.3mm larger. Can the outer diameter of secondary vulcanization shrink
- 8. Suppose that a city will build 1 million square meters of new housing in 2010, of which 250000 square meters are affordable housing. It is estimated that in several years of this year, the area of new housing in the city will increase by 5% on average compared with the previous year, and the area of affordable housing will increase by 100000 square meters every year. According to this plan, the year when the area of affordable housing built in that year exceeds half of that year's new housing area for the first time (already completed) will be calculated (1.052 = 1.1, 1.053 = 1.16, 1.054 = 1.22, 1.055 = 1.28)
- 9. Suppose that the inflation rate will increase by an average of 6% in the next 30 years. Now 1 million yuan is deposited in the bank. How much is left in 30 years? Please write down the specific process,
- 10. 10% annual reporting rate of 1 million. How much can we get in 40 years?
- 11. Compare the speed between the middle position and the middle time
- 12. Application of velocity formula in middle position
- 13. The middle position velocity formula of physical uniform linear motion in grade one of senior high school
- 14. How to deduce the formula of velocity in the middle position of uniform acceleration motion
- 15. Derivation of instantaneous velocity formula for middle position of a section of displacement Midpoint of displacement: v = root sign [(square of V0 + square of VT) / 2] How did you get out?
- 16. What is the formula of the velocity of the middle position of the uniform velocity linear motion?
- 17. A formula for calculating the velocity of linear motion with constant acceleration? (constant acceleration, not constant speed change) Acceleration a = (mg KS) / g, where m, G and K are known constants. The above formula is the functional relationship between acceleration a and displacement S. let the velocity of the object at the beginning and the end be 0. Can we give the formula for calculating the velocity of the object at time t? If not, what conditions are needed? I made a mistake. It should be a = (mg KS) / m
- 18. What is the velocity formula derived from the definition of acceleration? What is the average velocity formula of uniform linear motion? What is the displacement formula of uniform linear motion What is the velocity formula derived from the definition of acceleration? What is the average velocity formula of uniform velocity linear motion? What is the displacement formula of uniform velocity linear motion?
- 19. For an object moving in a straight line with uniform velocity, the acceleration is a, the displacement in time t is x, and the final velocity is v. the expression of the motion of the object is?
- 20. A formula for calculating the acceleration of a uniform speed varying linear motion