Forces and Motion Flashcards

Grade 6 · Science · Flashcards

Review key terms and concepts about forces, motion, and Newton's laws.

Flashcards

Force: A push or pull on an object; measured in Newtons (N).
Newton (N): The SI unit of force; one Newton accelerates a 1 kg mass by 1 m/s².
Inertia: An object's resistance to changes in its state of motion; proportional to mass.
Newton's First Law: Objects at rest stay at rest and objects in motion stay in motion unless acted on by an external force.
Newton's Second Law: F = ma; force equals mass times acceleration.
Newton's Third Law: For every action force there is an equal and opposite reaction force.
Net force: The combined total of all forces acting on an object.
Friction: A force opposing motion between two surfaces in contact; generates heat.
Gravity: The attractive force between any two objects with mass; Earth's gravity = 9.8 m/s².
Acceleration: The rate at which an object's velocity changes; caused by a net force.
Mass: The amount of matter in an object; determines how much inertia it has.
Velocity: Speed in a specific direction; a combination of speed and direction.
Balanced forces: Forces that are equal and opposite, resulting in no change in motion (net force = 0).
Unbalanced forces: Forces that produce a net force and cause a change in motion.