The solution of physical velocity in the first grade of high school After the train starts, it leaves the station for a uniform acceleration and straight-line movement. When people at the front end of the first carriage see the second carriage passing him for 5 seconds, how long does the sixth carriage pass him? Detailed process... First floor 1: √ 2-1: √ 3 - √ 2: Where did you come from? Can you explain it in detail

The solution of physical velocity in the first grade of high school After the train starts, it leaves the station for a uniform acceleration and straight-line movement. When people at the front end of the first carriage see the second carriage passing him for 5 seconds, how long does the sixth carriage pass him? Detailed process... First floor 1: √ 2-1: √ 3 - √ 2: Where did you come from? Can you explain it in detail

This is the law of uniform variable speed linear motion. The teacher should have taught it at the beginning. Don't worry, it's universal in the world. I always use this method to do it
The time ratio of an object moving in a straight line with uniform acceleration passing through continuous equal displacement
1：√2-1：√3-√2：………………
Let the time of the sixth section be t. the time of the sixth section is longer than that of the second section √ 6 - √ 5: √ 2-1 = t: 5
t=5（√6-√5）/√2-1

Is the period of large angular velocity necessarily small

Because the angular velocity = (2 * 3.14) / T, it can be seen that the angular velocity is only related to the period and is inversely proportional

The relationship between angular velocity and period is

Angular velocity = 2 Pai / T

In physics, the conversion law between angular velocity and period (please pay attention to the unit I give you!)
I remember t = 2 π / ω, but the unit of ω here is "radians / s". If the unit is "revolutions / seconds", multiply 2 π to "radians / seconds"
So how can "RPM" be converted into a period? Can we take the reciprocal directly?

Straight to the bottom! That's right!
Period T is one week per second
The number of revolutions of speed n unit R / s 1s
T=1/n

Is linear velocity equal or angular velocity equal in concentric circles?

Same angular velocity

High school physics angular velocity, linear velocity formula?

Angular velocity: w = 2 π / T linear velocity: v = 2 π R / T

You don't have to do it yourself, just follow the formula, and add the process and answers. I didn't give it to you,

Topic: the radius of the earth's equator is 6400km. Please calculate the rotation speed of the earth's equator according to the known information
Angular velocity = π / (24 * 3600)
Linear velocity = angular velocity * radius = 465 M / s

What is the difference between instantaneous velocity and average velocity?
Aren't their algorithms the same?

Velocity is divided into average velocity and instantaneous velocity
The average velocity is the displacement of an object over a period of time divided by the time interval
But the motion of objects is not always uniform, that is to say, the speed of motion is not always the same (if it is the same, the instantaneous speed is equal to the average speed). Therefore, in order to more accurately describe the speed of the motion of objects, we take a smaller time interval, that is, to find the short-time (instantaneous) motion of objects, so this is the instantaneous speed
You don't understand what I'm saying, do you?

What's the difference between average speed and average speed?
Is the average velocity positive or negative?

One vector, one scalar
Speed has positive and negative, speed only has size

Speed, average speed, speed, average speed, distinguish

Speed generally refers to the instantaneous moving speed, and the average speed is an average value of the speed in a certain period of time. Speed is the rate of change of the speed of an object's movement. Speed has no direction, only size, and speed has size and direction. Speed is a scalar, which only describes the speed of an object's movement, but does not reflect the direction of the object's movement