2. Motion is when an object change in
position over time. Motion can be
described using physical quantities; scalar
and vector.
Scalar Quantity-physical quantities that
have magnitude only.
Example: Distance, Speed, Mass, Energy
and Time
Vector Quantity-physical quantities that
have both magnitude and direction.
Example: Displacement, Velocity,
Acceleration and Force
3. Distance -scalar quantity that refers to
how far an object moves. The total length
covered by the moving object. SI Unit is
meter (m).
Displacement–vector quantity that refers
to the distance measured in a straight
line in a specified direction. SI Unit is
meter (m).
4.
5. Speed –scalar quantity that
refers to the distance covered
per unit time.SI Unit (m/s)
Velocity–vector quantity that
refers to rate of change of
displacement. SI Unit (m/s) +
direction
6. Acceleration–vector quantity that
refers to the rate of change of
velocity. SI Unit (m/s2)
TYPES OF ACCELERATION
a. Uniform Acceleration–It is when
the change (increase or decrease) in
its velocity for every unit of time is
the same. Acceleration is constant.
7. Non-Uniform Acceleration–It is when the
change (increase or decrease) in the object’s
velocity for every unit of time is not the
same. Acceleration is not constant.
8. Force –It is either a push or a pull that one
object exerts on another object. SI Unit is
Newton (N). It can be measured using the
force meter.
TYPES OF FORCE
a.Contact Force–a type of force present
between objects that are in contact.
Example: Friction, Normal Force, Tension,
Applied
b. Non-Contact Force-a type of force that
does not require the object to be in contact.
Example: Gravitational, Electric and Magnetic
9. Resultant Force or Net Force–it is the single
force that is the sum of two or more forces
acting on an object together.
Example:
10. A stationary football will be kicked. If the
force coming from the kick is applied,
what will happen to the motion of the ball?
11. A moving hockey ball
is continuously being
hit. If the force is
continuously applied
to the moving ball,
what will happen to
the motion of the
ball?
13. A moving tennis ball being hit by the
opposite player. How does the force of the
hitting affect the motion of the ball?
14. Force affects the motion of an object in
four ways:
1.Force will cause a body at rest to move.
2.Force will cause a moving body to
continuously moving or increase speed.
3.Force will cause a moving body to stop
moving or decrease speed.
4.Force will cause a moving object to
change in direction.
17. Sir Isaac Newton is one
of the famous scientist
that established the
Three Laws of Motion.
Laws are statements
that are generally
considered as a fact in
the scientific
community.
18. Inertia of an object refers to the reluctance
of the object to change its state of rest or
motion due to its mass.
19. Mass is the measure of inertia. An object
with greater mass will have greater inertia.
The larger the mass of an object, the harder
it will be for the object to start moving, slow
down, move faster or change in direction.
20.
21. It states that every object will
continue in state of rest or uniform
motion in a straight line (state of
inertia) unless a resultant force
acts on it. It only means that when
the resultant force and the
acceleration is zero or the forces are
balance the object will continue at
its state of rest or uniform motion.
22. It states that when a resultant
force acts on an object of a
constant mass, the object will
accelerate in the direction of
the resultant force. The
product of the mass and
acceleration of the object gives
the resultant force.
23. Thus to compute for the resultant force we
use the formula
𝑭=𝒎𝒂
where:
𝐹=resultant force (𝑁)
𝑚=mass of object (𝑘𝑔)
𝑎=acceleration of object (𝑚/𝑠2)
Newton’s Second Law of Motion is also called
as Law of Acceleration.
24. Three conclusions when we apply the 2nd
Law of Motion Formula:
1.An applied resultant force (F) on an object
produces acceleration (a)
2.Doubling the amount of the resultant force
(F) on an object also doubles its acceleration
(a)
3.With the same amount of resultant force,
doubling the mass (m), halves the acceleration
(a)
25.
26. 1.A hunter shoots a 2 kg arrow
accelerating it at 15m/s2. How
much force does this require?
2.A person with a mass of 75 kg is
accelerated to 3 m/s2. How much
force was applied to him?
27. 3.What is the mass of a falling rock if
it produces a force of 147 N?
Acceleration to gravity is always
9.8m/s2(constant value).
4.What is the mass of a truck if it
produces a force of 14,000 N while
accelerating at a rate of 5 m/s2?
28. It states that if object A exerts a force on
object B, then object B will also exert an
equal and opposite force on object A. This
law is also known as Law of Action and
Reaction.
29.
30. Life Application of Laws of
Motion
Objective: Create a
presentation that explains
Newton’s Laws of Motion using
real-life examples.
