Yancheng Jiefang Road Experimental School Physics Examination Chapter 5 Unit TestNo. 1 23456789 1 0121315 Answer1,multiple-choice questions (fill in the correct answer in the above table15× From the formula of uniform linear motion, the following statements are incorrect: () A. Speed is proportional to distance; B the speed of an object moving in a straight line at a uniform speed has nothing to do with time or distance; C. speed is equal to the ratio of distance to time; D. The distance of an object moving in a straight line at a uniform speed is proportional to time; 2. Among the following statements about reference objects, the wrong one is () A. Is the object static or moving? It is related to the choice of reference objects. B. the reference objects can only be those that are not moving. C. The selection of reference objects is arbitrary, mainly according to needs and convenience. D if no reference object is selected, it is impossible to determine whether the object is moving. 3. Measure the length of the object with a telescopic tape measure, and the measurement result is ................................................................................. (the best of which is ... () A. The minimum dividing value is decimeter ruler B. The minimum dividing value is centimeter ruler C. The minimum dividing value is millimeter ruler D. As long as the accuracy can meet the requirements, it is good. The correct expression in the following formula is () a.7.2m = 7.2×100 = 720cm b.7.2m = 7.2m×100 = 720cm c.7.2m = 7.2×100cm = 720cm d.7. The fastest brown petrel in the air, 1 minute can fly 5 kilometers. Compare their speeds () A. The cheetah has the highest speed B. The swordfish has the highest speed C. The brown petrel has the highest speed D. The three speeds are the same. 7. Two cars, A and B, move in a straight line at the same time, place and direction, and their s-t images are shown in the figure. Six seconds later, the positional relationship between the two cars is () A is 0.6m in front of B, B is 0.2m in front of B, C is 0.6m in front of A, and D is 0.2m in front of A/Kloc-0. In the picture below, it is AB. When two scales measure the length of a piece at the same time, the reading of AB is () A.A.: 3.80 cm respectively. B: 3.80 cm B.A.: 2.80 cm B: 2.8 cm C.A.: 2.80 cm B: 2.80 cm D.A.: 2.8 cm B: 2.8 cm 9. In extracurricular activities, Xiaoming and Xiaohua both run in a straight line. In a certain training, the relationship between the distance they passed and the time is shown in the figure, so the following statement is correct: () A. Both of them do uniform linear motion B. Neither of them does uniform linear motion C. In the first 2s, Xiao Ming runs faster D. In the whole process, the average speed of the two runners is the same: 10, A and B, and the distance ratio used is 2: 3. Then their speed ratios are () a, 1: 1 B, 9: 4 C, 2: 3 D, 4: 9 1 1. The score of a 100-meter sprinter is 10 second. If his average speed in the first five seconds is 9m/s and his speed reaches 13m/s when crossing the finish line, then his average speed in the whole course is () a.8m/sb.9m/sc.10m/SD.1m/s/kloc. The helicopter must ascend relative to the ground () A.B. It must descend C. It must stand still D. It can't be judged 13. Party A and Party B run from one end of the runway to the other at the same time, with Party A running in the first half and walking in the second half; And b runs in the first half and walks in the second half. Assuming that Party A and Party B run at the same speed and walk at the same speed, the average speed of the bus in the whole journey is () a.50km/hb.24km/hcAssuming that the speed of the ship (facing the water) is constant and the water has a speed, the time required for the ship to enter the water and return against the water is t2. There is .............................................. () a.t1> t2b.t1< t2c.t1= t2d. Issue number1234 5678 91011212. Fill in the blanks (every 1 32 points) 16. Fill in the appropriate units. The height of a middle school student is1654 _ _ _ _ _ _, the walking speed is 5.4 _ _ _ _ _, and the time to run from the first floor to the third floor is 0.2 _ _ _. The length of the physics textbook is 25_____, and the volume of the thermos bottle is 2.5 _ _ _ _. 17. A classmate measured the diameter of a round coin with a millimeter scale in his hand. The four results are: 2.5 1cm, 2.53cm, 2.5cm, 2.5 1cm, and one of the error data is _ _ _ _ _ _. 18, Figure A: There are _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _. Figure B shows the methods to compare the speed of athletes: _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _. 19, as shown in the figure, there are signs limiting the speed on the expressway to reduce traffic accidents. This is because there are _ _ _ _ _ driving cars. The picture on the right shows the speedometer of a Santana car, from which it can be seen that the speed at this time is _ _ _ _ _ _ _ _ km/h, and China successfully launched the "Dongfanghong III" geosynchronous communication satellite. "Synchronization" here means that the satellite is stationary relative to _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _. 2 1, a classmate sits on the rotating amusement machine, and the amusement machine starts to rotate and accelerate. In this process, his kinetic energy; He saw the people and buildings around him spinning, which was his reference conclusion. 22. The passengers on the southbound train saw the trees on the roadside retreating. If the car is retreating at the same time, taking the ground as the reference object, the motion state of the car can be,,. T3 1 Train T32 Beijing → Hangzhou Express is kilometers away from Beijing Railway Station. Hangzhou → Beijing Express 15: 500 0 Beijing-13: 20 20: 2 129 497 Jinan 418: 33/KLOC- 5 53 1458 Shanghai West 24 23: 16 7: 30— 1664 Hangzhou 2 1: 40 23. On the "information superhighway", the speed of information propagation is equal to the speed of light in vacuum, which is about km/h; It takes about 5× 10-3s for Shanghai to receive information from Beijing through the "information superhighway", so the distance from Shanghai to Beijing is about km. 24. There are a pair of express trains T3 1 and T32 in opposite directions between Beijing and Hangzhou. The timetables of these two trains are listed in the table. Please answer the following questions: (1)t 3 1 and the total running time of T32 train is _ _ _ _ _ _ _ _ _ _ _. (2) Excluding the parking time, the average speed of the train is _ _ _ _ _ _ _ km/h.25. People can't concentrate when sneezing, and drivers of automobiles are prone to traffic accidents when sneezing while driving. Let a driver sneeze at 1.5s, and the speed of the automobile is 72km/h. If you sneeze suddenly while driving, the distance the automobile travels during this time is. 26. An object moving in a straight line at a uniform speed passes through 10m in 5s, with a speed of _ _ _ _ m/s and a distance of _ _ _ _ _ _ _ in 3. 27. As shown in the figure, it is a stroboscopic photo of a ball moving in a straight line from point A to point F. If the stroboscopic camera flashes once every 1s, By analyzing the photos, we can know that the ball moves linearly from point A to point F (fill in "constant speed" or "variable speed"); * * * moved a distance of centimeters; The average speed of the ball moving from point A to point F is m/s.3. Experiment (17 minutes) 28. The length of the object AB is _ _ m. The stopwatch reads _ _ s (2 minutes) 29. An exploration team of a class studied the law of uniform linear motion with the experimental device (partial diagram) shown in Figure 2 ~ LL, and obtained the relevant data recorded in Table F, in which the first line is the distance of bubbles in the glass tube, the second line is the time of bubble motion, the third line is the time of bubbles per travel 10cm, and the fourth line is the fourth line. (3 points) (2) Draw an image of the movement distance of the object changing with time in the coordinates, and use it to calculate the speed of the bubble. (4 points) (3) Analyze the data in the table, and summarize the characteristics of uniform and straight-line motion of bubbles. (2 points) 30. Students of Grade Two (1) in a school conducted the experiment of "measuring the falling speed of paper". Experiment: (1) The physical quantities to be measured are:,. (2 points) (2) The required measuring tools are: (2 points) (3) Please design a table for recording data. (2 points) 4. Calculation problem (2 1) 3 1. The picture on the right shows the fare invoice when Xiaohong takes a taxi to his destination. How long does it take to take a taxi? (2 points) 2. What is the average speed of taxis? (2 points) 32. The roads in a certain area are as shown in the figure. After committing a crime in A, the gangster fled along AB=40m at a speed of 5 m/s, stopped at L's when he arrived at B, and then continued to escape along BC=30 at a speed of 6m/s.. When the gangster passed the midpoint of AB, Xiao Ming, a brave classmate, found him and immediately set off from A to intercept the gangster along AC. As a result, the police and he just caught the gangster in C.Q. (1) How long did it take for the gangster to move from A to Japan? How long did it take from b to c? How long did it take the gangster to get from A to C? (3 points) (2) What is the average speed of gangsters? (3 points) (3) If the AC length is 50m, what is the average speed of Xiao Ming chasing gangsters? (3 points) A B C 33. As the picture shows, the distance between two students (A cycling and B running) changes with time. (1) What reasonable information can be obtained from the chart? (Write at least two) (2 points) Information1:_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _. (2) (4) Please make a plan about speed, distance and time according to the data in the picture.