I am not sure if the second rider would exert a force on the first person.

She had to study the situation as if it were an engineering problem, like trying to exert force in some difficult medium.

Well, the larger planets in our system exert an even bigger force.

He had to exert considerable force to keep the rod from being pulled out of his hand.

The support and Earth exert force on each other.

That they exert great force upon the physical world is beyond doubt.

Once they get big enough, their gravitational fields will exert a major force.

The Earth simply doesn't exert enough gravitational force to keep it on the planet.

First, just because two objects meet does not mean they are exerting equal and opposite forces on each other.

And all through the day, the sun exerts different forces that distinguish each passing hour.