![](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>)
Problems of VT and St images Who can help me summarize the knowledge about these two images For example, in these two images, what the quadrant represents and what the slope represents. The formula is better!
The horizontal axis of S-T image is displacement (equivalent to X in X-Y diagram), and the vertical axis is time (equivalent to y in X-Y diagram). If the image is a straight line, then its slope is the acceleration of the motion. If it is a curve, then the slope of a tangent is the acceleration at the corresponding time
The horizontal axis of V-T image is velocity (equivalent to X in X-Y diagram), and the vertical axis is time (equivalent to y in X-Y diagram). The area enclosed by graph and coordinate bearing is displacement
What do the different forms of VT st images represent?
St image is a horizontal line, what does a diagonal line represent?
Vt image is a horizontal line, what does a diagonal line represent?
Which one represents uniform linear motion, static motion and accelerated motion?
It's better to draw a picture
The slope of St graph is the magnitude of velocity, the slope of VT graph is the magnitude of acceleration, so the uniform linear motion has constant velocity, that is to say, the slope is a constant, that is, a diagonal line on St graph or a straight line perpendicular to V axis on VT graph, the static velocity is 0, and the slope is 0, that is, the linear acceleration perpendicular to s axis on St graph
The difference between ST image and VT image
The horizontal axis of S-T image is displacement (equivalent to X in X-Y diagram), and the vertical axis is time (equivalent to y in X-Y diagram). If the image is a straight line, then its slope is the acceleration of the motion. If it is a curve, then the slope of a tangent is the acceleration at the corresponding time
The horizontal axis of V-T image is velocity (equivalent to X in X-Y diagram), and the vertical axis is time (equivalent to y in X-Y diagram). The area enclosed by graph and coordinate bearing is displacement
RELATED INFORMATIONS
- 1. Why is displacement in VT image area
- 2. Vt image of uniform velocity curve motion Is it the same as the uniform linear motion image
- 3. In △ ABC, BD = 2dc, AE = be. It is known that the area of △ ABC is 18 square centimeters, then the area of quadrilateral AEDC is equal to______ Square centimeter
- 4. A triangle is 12cm. If you extend it 2cm, its area will be increased by 3cm. What is the original area of this triangle
- 5. The area of a triangle is 15.5 m2, and the area of a parallelogram with the same base and height is () CM & sup2 A、31 B、7.75 C、30 D、32
- 6. The length of three sides of a triangle is 12cm, which is equal to the circumference cm of a square. The side length of the square is () cm, and the area is () square cm emergency
- 7. It is known that the area of triangle AOB is 15 square centimeters, and the length of line ob is 3 times of OD. The area of trapezoid ABCD is calculated
- 8. As shown in the figure, in the trapezoidal ABCD, AB is parallel to DC, AC and BD intersect at O. if the area of triangle ODC is 1:4 than that of triangle AOB, calculate the area of triangle ODC Ratio of area to area of triangle AOD
- 9. As shown in the figure, the area of trapezoid ABCD is 45 square centimeter, the area of bottom AB is 10 centimeter, the area of triangle doc is 5 square centimeter
- 10. In rectangle ABCD, ab = 67, BC = 30, point EF is the point on the edge of AB and BC respectively, what is the minimum area of triangle def?
- 11. An isosceles trapezoid, the sum of the top and bottom is 14.5 cm, waist length is 6.8 cm, how many cm is his circumference?
- 12. The perimeter of an equilateral trapezoid is 39 cm, the lower base is twice as long as the upper base, and the waist is 2 cm longer than the upper base
- 13. The circumference of an isosceles trapezoid is 39 cm, the upper base is 2 cm shorter than the waist, and the lower base is twice as long as the upper base
- 14. A triangle and a parallelogram have the same area and height. If the bottom of the triangle is 18 cm, the bottom of the parallelogram is () cm A. 9B. 18C. 36
- 15. The bottom of a trapezoid is 20 cm. If the upper bottom is extended by 8 cm, it becomes a parallelogram, and the area increases by 24 square cm. The original trapezoid area is ()
- 16. Q ǐ m ā o is selected from Liu Ji, the author of Yu Li. In this passage, Zhao people suffer from rats, and the cat is in Zhongshan
- 17. Zhao people suffer from rats and beg for cats in Zhongshan. It is well known that he is right and wrong
- 18. The translation of classical Chinese, Guan Ning's cutting the pole into the city, Xi Bu Bian, Qi Zhuang Gong's hunting, Chu people's learning the boat, worldly unscrupulous cat, horse's price ten times, Zhini's painting
- 19. Translation of classical Chinese by Shu's civet cat
- 20. This mouse and cat are not afraid of changing sentences Cats are not afraid of mice Mice are not afraid of cats