NEWTON’S
MOTION
By: Per.7
ND
2
LAW OF
WHAT IS IT?
• Newton's second law Of Motion can be formally stated as follows:
The acceleration of an object as produced by a net force is directly
proportional to the magnitude of the net force, in the same direction as
the net force, and inversely proportional to the mass of the object.
WHAT DOES IT MEAN?
Acceleration is produced when a force
acts on a mass. The greater the mass (of
the object being accelerated) the greater
the amount of force needed (to
accelerate the object).
Acceleration of an
object depends on its
mass and size and
direction of the force
acting on it.
Heavier objects require more force to move a
distance, as a lighter object requires less force
to move the equal distance.
• The second law gives an exact relationship between force,
mass, and acceleration.
• F=MxA
• Force = Mass times acceleration
DEFINITIONS
• Momentum - Characteristic of a moving body determined by the product
of the body's mass and velocity.
• Mass - an object is related to the force required to accelerate it and hence
is related to its inertia, and is essential to Newton's laws of motion.
• Velocity – The speed of something in a given direction.
EXAMPLES