Newton's Third Law

According to Newton's third law of motion, for every action, there is an equal and ________ reaction.

• same

• similar

• random

• opposite

When a person jumps off a boat onto the dock, the boat moves in the ________ direction.

• same

• random

• upwards

• opposite

True or False: In a force pair, the forces are always equal in magnitude.

• Not always

• Sometimes

• True

• False

When a person pushes a wall, the wall exerts an equal and ________ force back on the person.

• weaker

• opposite

• greater

• same

When a rocket is launched, the force exerted by the exhaust gases propelling the rocket forward is the ________ force.

• resistance

• action

• opposite

• reaction

True or False: The action and reaction forces in a force pair always have the same direction.

• True

• Sometimes

• False

• Depends on the situation

When a person walks on the ground, the person exerts a force on the ground and the ground exerts an equal and ________ force on the person.

• greater

• weaker

• same

• opposite

True or False: The action and reaction forces in a force pair always have the same magnitude.

• Depends on the situation

• False

• True

• Sometimes

If an object is pulled along a surface (e.g. a suitcase pulled across the floor), then the ______ is acting in the opposite direction of the applied force.

• normal force

• parabolic force

• residual force

• frictional force

True/False: Friction force is always the equal and opposite of force due to gravity.

• True

• False