Physics Final Term1

Average Speed

Speed measured over a certain distance for a certain time

Momentum

The quantity of motion of a moving body, measured as a product of its mass and velocity

Displacement

A way to measure motion that only looks at starting and ending points

Gravity

The force that attracts a body toward the center of the earth, or toward any other physical body having mass

Constant Speed

A speed that does not change over time

Vertical Motion

Any motion that is perpendicular to the earths surface and occurs naturally due to gravity

Velocity

Speed in a given direction

Newtons 1st law

Law of inertia, object at rest will stay at rest unless acted upon by an outside force

Force

Any push or pull on an object

Speed

A rate of change in a position over time

Friction

An attraction between two bodies

Centripetal Force

A force acting toward the center of a circular path

Acceleration

The rate of change in an objects velocity

Newtons 2nd law

Law of acceleration

Circular Motion

Anything that travels in a circular path

Horizontal Motion

Any motion that is parallel to the earths surface and occurs naturally due to gravity

Instantaneous Speed

A speed is given at a precise moment in time

Newtons 3rd law

Law of reciprocal actions

Projectile

Anything that is thrown or shot in the air

Distance

A way to measure the exact path an object takes

Terminal Velocity

Relationship between gravity pulling down and air resistance up or the maximum speed an object will reach in free fall

Conservation of Momentum

Total momentum within a system will start constant unless acted upon by am outside force