Newton's Third Law
This law states that for every action, there is an equal and opposite reaction.
Newton's third law
This is the attractive force that exists between all objects that have mass.
Gravity
The gravitational force exerted on an object.
Weight.
In this type of collision, the objects bounce off each other.
Elastic collision.
This is the general term for a force that one object can apply to another without physically touching it.
Noncontact force.
This is the specific term for the forces two objects apply to each other.
Force pairs
Because gravity acts without objects touching, it is said to be exerted through this—a region of space where every point has a physical quantity like force.
A field.
This is the standard unit of measurement for weight.
Newtons.
In this type of collision, the objects stick together.
Inelastic collision.
This noncontact force allows magnets to move metal paper clips from a distance.
Magnetic force.
This is the reason force pairs do not cancel each other out, even though they are equal and opposite.
Because they act on 2 objects.
These are the two primary factors that affect the strength of gravitational pull between two objects.
Mass and distance.
This specific force pushes back perpendicular to an object's surface
Normal force.
When a moving ball hits a stationary ball, this happens to the velocity of the first ball.
The velocity decreases.
This is the specific noncontact force created when a balloon is rubbed on
Electric force.
While force pairs act on different objects, these types of forces act on the same object and can result in a net force of zero.
Balanced forces.
This is the numerical value for the acceleration of all falling objects near Earth's surface (ignoring air resistance).
9.8 m/s^2
This is the mathematical equation used to calculate weight (W).
W=mg
A football player tackling another player is a real-world example of this type of collision.
An inelastic collisions.
When a drone's propellers push air downward, this is the resulting "reaction" force.
The air pushing the drone up.
Scientists use this specific type of simplified model or diagram to represent all forces acting on a specific object.
Free body diagram
Without the Sun's gravitational force, this is the path the Earth would take through space.
A straight line.
According to the "Weight Equation," what is the approximate weight in Newtons of a 10 kg bowling ball on Earth using the standard acceleration of 9.8 m/s^2?
98 N
During a collision, objects change motion even if they have different masses because the force applied to the second object is always ________ and ________ to the force applied back to the first.
Equal & opposite.
Every force, including noncontact ones, must have one of these—the object responsible for the force.
Source object.