Physics
- the branch of science concerned with the nature and properties of matter and energy
Speed
- the ratio of the distance an object moves to the amount of time it takes for that object to move
formula: Speed=distance/time
formula: Speed=distance/time
Velocity
- the speed and direction something is moving, measured relative to a reference point
Acceleration
- the rate at which velocity changes
formula: Acceleration=force/mass
formula: Acceleration=force/mass
Force
- an act of a push of pull on an object
Friction
- force that opposes the motion of objects that touch as they move past each other
Static Friction
- a friction force that acts on objects that are not moving
example: a basketball sitting still on the court
example: a basketball sitting still on the court
Sliding Friction
- a friction force that opposes the motion of an object as it slides over a surface
example: a basketball player shoes slides across the court as she glides for the ball
example: a basketball player shoes slides across the court as she glides for the ball
Rolling Friction
- a friction force that acts on rolling objects, caused by the change in shape at the point of rolling contact
example: a ball rolls across the court floor
example: a ball rolls across the court floor
Air Resistance
- when fluid friction acts on an object moving through air
Parabola
- a symmetrical open plane curve formed by the intersection of a cone with a plane parallel to its side
Projectile Motion
- a form of motion in which an object is thrown near the earth's surface, and it moves along a curved path under the action of gravity
Momentum
- the quantity of motion of a moving body, measured as a product of its mass and velocity