SITI SHAZANA BASIRAN

1
Newton s laws of motion
SITI SHAZANA BASIRAN AMIRAH AHMAD UMMU ATHIAH
SHAARI NOOR AMIRA BASRI AYUNEE RAHAYU AWALUDIN
RIFLE RANGE NATIONAL ECONDARY SCHOOL
SMK PADANG TEMBAK, KUALA LUMPUR, MALAYSIA
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FIRST NEWTONs LAW
SECOND NEWTONs LAW
THIRD NEWTONs LAW
EXIT
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FIRST NEWTONS LAW - inertia
Inertia is the property of a body by virtue of
which it tends to persist in a state of rest or
uniform motion in a straight line.
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Why was it so difficult to stop the TITANIC from
colliding with the iceberg?
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The mass of the Titanic is very large.
Inertia is proportionate to mass.
The Titanic could not change its direction
because its extremely high inertia forces it to
continue in a straight line, thereby colliding
with the iceberg.
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SECOND NEWTONS LAW
F ma m ( v u )
t
m mass a acceleration v final
velocity u inertia velocity t time
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What is the function of the hand glove of this
baseball player?
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F ma m
(v-u)
t
Force is inversely proportional to time
The hand glove increases the time of the
collision, thereby reducing the force.
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THIRD NEWTONS LAW From the Principle of the
Conservation of Momentum
F -F action - reaction
m1u1 m2u2m1v1 m2v2
m1u1- m1v1 m2v2-m2u2 -m1(v1 u1) m2
(v2-u2) t t -action
reaction Action - Reaction
m mass u inertia velocity v final
velocity
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10
How is the rocket launched into outer space?
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The two fuel elements are mixed and ignited in a
combustion chamber.The products of the reaction
gain momentum and are ejected at high velocity
at the rear.The rocket itself experienced an
equal and opposite momentum and is therefore
propelled forward.
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The narrow front tip reduces friction.
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Retro rockets assist in creating a soft landing
on the moon.
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The ejection of the exhaust gas to the rear
creates the necessary action force.
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N
Y
H
U
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T
A
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FOR YOUR SUPPORT
Madam Tan Tee Hwa,
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