Forces (chapter 4)

Newton’s first Law of motion

Newton’s first Law of motion states that every object will continue in its state or rest or uniform motion in a straight line unless a resultant force acts on it

Inertia definition

The inertia of an object refers to the reluctance of the object to change its state of rest of motion, due to its mass.

• An object with a greater mass will gave a greater inertia

Newtons’s Second Law of Motion

Newton’s Second Law of motion states that when a resultant force acts on an object of a constant mass, the object willl accelerate in the direction of the resultant force.

Newton’s Third Law of motion

Newton’s Third Law of motion states that if body A exerts a force F(ab) on body B, then Body B will exert an equal and opposite force F(ba) on body A

Friction definition

Friction is the contact force that opposes or tends to oppose motion between surfaces in contact.