Your car just ran out of gas so you decide to push it to the gas station. What force makes the car heavy in the first place? What other forces make the car difficult to move? Since you can't change the surface on which the car sits, how else could you make the car easier to push? What force actually makes the car tires easier to move? (four sentences!)

(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.