Category 1
A push or pull on an object
Force
The amount of matter in an object
Mass
Gravitational force exerted on an object
Weight
Attractive force that exists between all objects that have mass.
Gravity
The formula: "F = m/a" goes with which law?
Newton's 2nd Law of Motion
Gravity and magnetism are examples of what?
Noncontact Forces
Which type of friction keeps an object at rest?
Static Friction
Which type of force will cause a change in an object's motion?
Unbalanced force
What causes a falling skydiver to slow down after the parachute opens?
Air Resistance
What is the term for the forces that two objects that exert on each other?
Force Pair
What is the measure of how hard it is to stop a moving object?
Momentum
Force that resists the motion of two surfaces that are touching.
Friction
The tendency of an object to resist change in its motion.
Inertia
A force one object can apply to another without touching it.
Noncontact Force
A push or pull on an object by another object that is touching it.
Contact Force
Any motion in which an object is moving along a curved path.
Forces that combine and form a net force of zero.
Balanced Force
Forces acting on an object that combine and form a net force that is not zero.
Unbalanced Force
Forces that two objects apply to each other
Force Pair
What happens when unbalanced forces act on an object at rest?
The object begins moving in the direction of the net force.
States that if the net force of an object is zero, the motion of the object does not change.
Newton's 1st Law
A force in a circular motion that acts perpendicular to the direction of motion toward the center of the circle.
Centripetal Motion
States that for every action there is an equal and opposite reaction.
Newton's 3rd Law
States that total momentum of a group of objects remains the same unless outside forces act on the objects.
Law of Conservation of Momentum
What happens when unbalanced forces act on an object in motion?
The object will accelerate in the direction of the net force.