Question

A boy uses a force to keep a rock from falling. (He is carrying the rock.) Some forces, like this one, act only when two objects are touching. Which force usually acts between objects that are NOT touching?

A. friction
B. gravity
C. pulling
D. pushing

Answer 1

gravity is a non contact force , jump from a little high place (don't do that :P) , you wont just get stuck in the air you will fall down , this is gravity you dont need any contact