Displacement
Change in location of an object.
Kinematics
How things move/ motion of an object or system of object
Includes position, velocity, and acceleration
Speed
Rate change of an object
Instantaneous speed
Speed at 1 given moment in time
Constant speed
Speed which neither decreases or increases
Average speed
Calculated by dividing distance by time
How to find time
Time= distance/velocity
Acceleration
How fast something speeds up or slows down
Measured meters seconds per seconds
Formula for acceleration
A=(Vf-Vi)/t
Vf= ends up at
Vi= speed it starts at
Force
3 forces
Any push or pull exerted on an object.
Gravity
Supporting force
Air pressure
Balance force
Equal in size and opposite in direction
Ex: tug-o-war
Unbalanced forces
Not equal in size
Ex: kicking a ball
Newton’s first law
Other name for it
Object will maintain a constant velocity unless acted on by a net force.
Law of inertia
Inertia
Tendency of an object to resist any change in. Motion
Gravity
Force of mutual attraction which every object in the universe exerts on every other object
Weight
Measure of the gravitational pull on an object
SI unit Newton
Friction
Variables that help determine amount of friction
Force which opposes motion between two surfaces which are in direct contact
Force pushing the surfaces together
Texture
Motion
Change in position of an object
Ex:Earths rotation