SCIENCE

• Sliding friction is the force that opposes the motion of an object when it slides across a surface.
• static friction is a stongest type of friction
• rolling friction is when the object is moving and the surface is stationary, the friction is the same as the surface is moving, exist between the ball, tire, wheel, or any round object,
• fluid friction exist between a moving object and a fluid either gas or liquid
• kinetic friction is also known as sliding friction
• speed bumps breakers are placed on raods to slow down passing vechike
• anything that has MASS or the amount of matter in an object has gravity too. the force on gravity that acts on an object is also called WEIGHT
• SPEED refera to the rate at which something moves on operates
• the amount of friction between two object is depend on a kind of suface is called FACTORS AFFECTING THE AMOUNT OF FRICTION
• THE HEAVIER the object the MORE IT ATTRACTS OR PULL ANOTHER OBJECT
• FRICTION is non contact force that acts between object that are in. contacts
• the CLOSER THE DISTANCE between the center of two object with masses, the GREATER THE GRAVITATIONAL FORCE
• when an object is FAR FROM THE CENTER OF ANOTHER OBJECT its DISTANCE LESSENS THE ATTRACTION
• FORCE is a result of an interaction between two object is called force
• this interaction may be A PULL OR A PUSH which can cause an object to move
• UNIVERSAL LAW OF GRAVITATION this law states that the mass of an object is attracted towards the mass of another object
• GRAVITY is a noncontact force that pulls object together
• ROLLING FRICTION - exist to resist motion
• STATIC FRICTION exist between an object that is stationary on not moving and the surface where it is resting upon