Question

Define
1.
Contact force ​

Answer 1

Explanation:

A contact force is any force that requires contact to occur. Contact forces are ubiquitous and are responsible for most visible interactions between macroscopic collections of matter. Pushing a car up a hill or kicking a ball across a room are some of the everyday examples where contact forces are at work.

Answer 2

Answer:

contact force is that that there is a contact in both things