Download Newton`s First Law of Motion: ( Law of Inertia)

Newton’s First Law of Motion: ( Law of Inertia)
An object at rest will remain at rest and an object in motion
will remain in motion at constant velocity unless it is acted on
by a net force greater than 0N.
 Inertia means a resistance to a change in motion.
 More mass means more inertia.
 The more mass an object has the more it will resist speeding
up, slowing down, or changing directions.
 In other words, the more mass an object has, the harder it is to
accelerate it.
Newton’s Second law of Motion ( F=ma) ( There are three
precepts in the second law.)
1
A force acting on an object will cause the object to accelerate
in the direction of the force: the 2acceleration being
proportional to the force and 3inversely proportional to the
mass of the object.
Newton’s 3rd Law
Every action force produces an equal, opposite, reaction force.
Forces come in pairs called action~reaction pairs. The pairs
are equal in force but opposite in direction.
NET FORCE ( the sum of the force vectors)
Net force = 0N in equilibrium
Net force = 3N Left Unbalanced forces
Net Force = 6N Right
Net Force = 1 newton down
Net Force =1N down
Acceleration = F/m
= 1N down/3kg = .3m/s/s down