Every object continues in a state of rest, or of motion in a straight line at constant speed, unless it is compelled to change that state by forces exerted upon it.
friction- the force that acts between materials that touch as they move past each other
volume- a measure of space
mass- the measure of the amount of material in an object and is the same in all locations
weight- depends on gravity, force of gravity is 10 m/s
mass and weight are proportional
newton (N)- SI unit of force
weight = mass X acceleration
net force- combination of all forces acting on an object's state of motion
Newton's First Law
Newton's First Law
Every object continues in a state of rest, or of motion in a straight line at constant speed, unless it is compelled to change that state by forces exerted upon it.