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Newton's 1st law of motion:
If there is no resultant force
acting on an object ,
If it is at rest, it will stay at
If it is moving, it keeps on
moving at a constant
velocity (a constant speed
in a straight line)…read more

Slide 3

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Newton's 2 law of motion
The rate of change of
momentum of an object is
directly proportional to the
resultant force acting on it.
The change of momentum
takes place in the direction
of that force.
F=k(mv-mu)/ time this…read more

Slide 4

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Newton's 3 law
If an Object a exerts a
force on an Object B,
then B exerts an equal
but opposite force on A.
To every action there is
an equal but opposite
reaction.…read more

Slide 5

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A moving object keeps moving at a
steady speed in a straight line. To
change the speed or direction you need
to apply another resultant force.
This reluctance to change velocity is
called inertia
The inertia of an object depends on it's
A bigger mass needs a bigger force to
overcome it's inertia and change it's
And so mass is the property which…read more

Slide 6

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Weight is really a version of
Newton's second law.
Weight W, is the force of
gravity acting on the mass
m and g is often called the
acceleration due to gravity.
W=mg…read more

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