Steven W. answered 08/26/16
Tutor
4.9
(4,319)
Physics Ph.D., professional, easygoing, 11,000+ hours tutoring physics
Hi Meraz!
Every time you get in a car, the car pushes you forward by a contact force to move you places. The car is not alive.
If you run your hand into a wall, the wall exerts and equal force in the opposite direction on your hand (which you may feel quite strongly). The wall is not alive.
Hope this helps!