Force and Motion
(Newton's 2nd and 3rd Laws)
Vocabulary:
Newton's Second Law of Motion: when an unbalanced force acts on an object, the object's
acceleration equals the force divided by the object's mass
Acceleration Formula: acceleration = force / mass
Balanced Forces: forces that cancel each other out when acting together on a single object
Unbalanced Forces: forces that do not cancel each other out when acting together on a single
object
Newton's Third Law: for every action, there is an equal and opposite reaction
Action: when one object applies a force to a second
Reaction: the force the second object returns to the first
Newton's Law of Gravitation:
Air Resistance: offers resistance to the motion of objects falling through the air (air "friction")
Gravity: the force that pulls objects to Earth, an attraction between the mass of Earth and the
mass of an object
(Newton's 2nd and 3rd Laws)
Vocabulary:
Newton's Second Law of Motion: when an unbalanced force acts on an object, the object's
acceleration equals the force divided by the object's mass
Acceleration Formula: acceleration = force / mass
Balanced Forces: forces that cancel each other out when acting together on a single object
Unbalanced Forces: forces that do not cancel each other out when acting together on a single
object
Newton's Third Law: for every action, there is an equal and opposite reaction
Action: when one object applies a force to a second
Reaction: the force the second object returns to the first
Newton's Law of Gravitation:
Air Resistance: offers resistance to the motion of objects falling through the air (air "friction")
Gravity: the force that pulls objects to Earth, an attraction between the mass of Earth and the
mass of an object