Jimmy was standing on the sidewalk waiting for the bus to pick him up. Even though he is not moving, gravity is pulling him down with a force of 350 N. How is it possible to have a force acting on him and have him still remain motionless? There is a normal force acting on him that pushes him up with a force equal to the gravitational force.

There is a normal force acting on him that pushes him up with a force equal to the gravitational force.

Gravity is a non-contact force, so it doesn't affect him while he is touching the ground.

Gravity is a non-contact force, so it doesn't affect him while he is touching the ground.

The gravitational force is completely absorbed by the sidewalk he is standing on.

The gravitational force is completely absorbed by the sidewalk he is standing on.

Even though the gravitational force is pulling him down, he is creating an applied force by touching the sidewalk that pushed him up. A b c or d?