Seeing forces
Seeing forces in a simple way means understanding that forces are pushes or pulls that cause things to move or change their motion. Forces make objects start moving, stop moving, or change direction. For example, when you kick a ball, you push it, and when you pull a rope in a tug-of-war, you pull it. So, a force can either push something away or pull it closer.
To see forces smaller and deeper, we learn that the forces we feel, like pushing or pulling, actually come from interactions between tiny particles called atoms. At the smallest level, forces come from fundamental interactions between particles. These include electromagnetism, which explains why atoms push and pull on each other, like when you push something and feel resistance. Gravity, usually seen as a force pulling objects together, is explained by how mass curves space-time, causing objects to move as if pulled.
In simple terms:
Everyday forces are pushes or pulls that move things.
These forces are caused by tiny particles interacting.
Gravity is explained by a bending of space rather than a force acting at a distance.
What we call contact forces (like friction or pressure) are really electromagnetic forces between atoms.