Question

When we apply pressure to a spong or a pillow it does't make us feel the pressure back how does it satisfies newtoN's 3^rd law.

Answer 1

Newton's 3rd Law of motion.

For every action there exists an equal and opposite reaction. Action on one body reaction on another.
Every object that has mass exerts gravitational force on every other object. The Earth exerts a force equal to your weight on you and you also apply a force of same magnitude on the Earth.

But earth doesn't move towards me.
Earth has very large mass thus is acceleration is negligible.
Here almost similar case what i mentioned above.If we apply pressure on the pillow,it exerts a force.But we cant feel it due to our mass.