What is force? what is the difference between contact and non-contact?

A contact force must touch an object to influence it. For example you need to push you desk to move it.

A non-contact doesn't need to touch an object to influence it. For example a magnet pulls an object without touching it.

Explanation:

A force is a push and pull

first thing first of the answer is with technology. second thing second thing is that the big bang theory did not happened u see they say it did but what they dont realize is that like dinasures are still a round they might deny it but they and look at these 12 foot human skelteons they find lets see didnt the bible say something about giants. hope this peace.

i'm on my way to history not a mistory.