Are worm holes a real phenomenon?

(01.02 mc) nicole pushes her bike up a hill. overhead, the sun exerts a gravitational force on earth. which statement is true about the bike and earth? they both experience contact forces. they both experience non-contact forces. the bike experiences a non-contact force and earth experiences a contact force. the bike experiences a contact force and earth experiences a non-contact force. they both experience non-contact forces.

Gordon is going for a run through the park, but it is cold outside. the low outside temperature could affect his personal safety.

What is the force that opposes motion and works against the downward pull? a) friction b) gravity c) weight d) acceleration