If the object with initial velocity of 2m / s moves in a straight line with uniform acceleration and reaches 10m / s after 4S, the acceleration of the object is zero Its velocity at the end of the second second is, and its displacement at the end of the third is

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• 1. The initial velocity of the particle is 10 m / s, and it becomes 2 m / s after 4 s,
• 2. The initial velocity is 10 m / s, and the acceleration is 2 m / s
• 3. The initial velocity of a particle is 10m / s and the acceleration is 2m / s (1) The speed at the end of the fifth second (2) Average velocity displacement in the first five seconds (3) Average velocity displacement in the fifth second
• 4. The car moves in a straight line with a uniform deceleration at an acceleration of 3m / S2, passing two poles with a distance of 10m, and passing the second pole at a speed of 2m / s Find 1. Speed of car passing through the first pole 2. Time of car passing through two poles
• 5. After landing, the aircraft decelerates and glides evenly. The initial speed is 60m / s and the acceleration is 3m / S2. How long does the aircraft stop after landing () A. 10sB. 15sC. 20sD. 30s
• 6. At most, a rope can pull an object with a mass of 3M and decelerate with a uniform acceleration If a rope can pull an object with a mass of 3M at most and decelerate at the acceleration of a, then the rope can pull an object with a mass of m at most and increase at the same speed?
• 7. The acceleration is 3m / S ^ 2. If the initial velocity is 20m / s, the velocity of the particle will decrease after 4S
• 8. The object moves in a straight line with an acceleration of 2m / S2 at constant deceleration. The displacement within 2 seconds before stopping is 1 / 4 of the whole displacement. The initial velocity of the object is calculated
• 9. What is the acceleration of a car running at a constant speed of V = 10 m / s when the engine is turned off at the end of the second second second and the average speed is 9 m / s in the third second?
• 10. The average speed in the third second is 9 m / s. find (1) the acceleration of the uniform deceleration of the car (2) the displacement of the car in 10 s
• 11. When an object is moving in a straight line with uniform acceleration, the displacement in the first second is 6m, and the displacement in the second second is 10m
• 12. When an object moves in a straight line with uniform deceleration, the acceleration is 2m / s. After two seconds of movement, its final velocity is half of its initial velocity. The displacement of the object in this 2S and the distance from the object to stop are calculated
• 13. If the acceleration is 2m / S ^ 2 and the displacement is 1 / 4 of the whole displacement two seconds before the motion stops, then the initial velocity of the object is Don't use image method
• 14. The object moves in a straight line with constant deceleration in V0, stops in 6S, and the displacement in the last 2S is 2m. What is the acceleration, the initial velocity and the total displacement
• 15. The object moves in a straight line with uniform deceleration on the horizontal plane, and the acceleration is 5m / S2. The displacement of the object within 2S before stopping is calculated
• 16. The displacement of an object in 2S is 6 meters,
• 17. The object starts to move in a straight line with uniform acceleration from static state, and the acceleration is 1 meter per square second. What is the displacement of the object in the second second second? The answer is 3M. Can I use the average velocity in the second second second? How can I not find it?
• 18. When the object starts to move in a straight line with uniform acceleration from its rest, it is known that the difference between the displacement in the 4th and 2nd seconds is 12M, and then (1) the acceleration of the object moving and (2) the average velocity in the 4th second can be obtained A car is moving in a straight line with uniform acceleration. It takes 5 seconds to pass two trees 80 meters apart on the roadside. The speed when it passes the first tree is 8 MGS. Find the speed when it passes the second tree I have to do it today,
• 19. When an object moves in a variable speed straight line, the distance it passes in the first second is 3M, the distance it passes in the second second is 5m, and the distance it passes in the first three seconds is 15m, then what is its average speed in the first second, the average speed in the first two seconds, and the average speed in the third seconds?
• 20. If an object moving in a straight line with uniform velocity changes 6 m in the second second, and the displacement is 0 in the fifth, what is its initial velocity and acceleration? Let the direction of the initial velocity be the positive direction. I've previewed it, but some haven't learned it