The up and down movement of elevator is () phenomenon, the rotation of windmill is () phenomenon?

The up and down movement of elevator is () phenomenon, the rotation of windmill is () phenomenon?


Elevator up and down is vertical movement, windmill is rotary movement



Seek a mathematical argumentation problem. Take life as an example
1. What to do (purpose)
2. What method (form)
3. What is the result (formula)


Take school for example
Purpose (school)
Form (can walk, can ride)
Formula 1. Time on the road = time to school - time from home
2. Average speed = distance from home to school / time spent on the road



Life is full of examples of mathematics


The speed of vehicles, the shape of buildings, the weather