1. LET’S GET INTO MOTION
Pertains to the length
travelled by an object.
N C E D S I T A
A quantity described by both
magnitude and direction.
O R T E V C
2. Shortest distance between
initial and final position.
S D I N T M P A L C E
Tells you how fast and in
which direction an object
moves.
I Y T V E C L O
3. Tells you how fast a
certain objects move
D E E P S
A change in position with
respect to a reference
point
N O I T O M
4. Rate at which velocity
changes
A L R E C A I N O C E T
A quantity that includes a
number and a unit only
and described by
magnitude alone.
C L S A R A
9. FORCE AND MOTION
Force is a push or a pull exerted by one
body to another body; the effect of
which is to tend to change or change the
state of motion, change of size or shape
of the body on which it acts
12. Scalar
and Vector
Quantity
SCALAR – a quantity
represented only by its
magnitude
VECTOR – a quantity
represented not just
by its magnitude, but
also its direction
13.
14. Distance
and
Displacement
Distance – is a scalar quantity
which refers to “how much
ground an object has covered”
(length) during its motion.
Displacement – is a vector
quantity which refers to “how
far out of place an object is”, it
is the object’s change in
position (direction)
15. EXAMPLE:
A motorcycle is moving along a horizontal
straight line. The motorcycle moves from rest
to 40 meters to the right of the starting point.
We can say this:
1. The motorcycle has covered 40 meters, so
the total distance is 40m.
2. The motorcycle changed its position 40m
to the right of the origin. Its total
displacement is 40m to the right.
16. EXAMPLE:
If the motorcycle moves from 40m to 70m
This means that:
1. The motorcycle has covered an additional
30m. The total distance is 40m + 30m =
70m
2. The motorcycle changed its position 30m
to the right of the origin. Its total
displacement is 40m + 30m= 70m to the
right.
18. Speed
and
Velocity
•SPEED - A measure
of how fast or slow
an object travels or
the rate at which
an object changes
its distance.
•VELOCITY – is the
time rate of
change of position
or displacement
19.
20. PRACTICE DRILL
1.Caleb rides his horse
60 m in 5 s. What is his
average speed ?
2. A salesman travelled at
an average speed of 50
km/h for 2 hours.How far
did he travel?
3. If Irene is going to the
lake 60 km away at 40
kilometer per hour, how
long will it take for her to
get there?
21. VELOCITY
PROBLEM
Calculate the velocity of a car that
travels 556 km northeast in 3.4
hours.
If the distance covered by the
joggers is 2541 meters through the
park and the time it took to cover
that distance was 43.6 minutes
what was the speed of the jogger.
22. 3. How much time does it
take a person to walk 12
km north at a velocity of
6.5 km/hr?
4. If took 3.5 hours for a
train to travel the distance
between two cities at a
velocity of 120 km/h. How
far did the train travel
between the two cities?
23. •A man walks 7km East in 2hrs and 2km in 1hr in the same
direction.
a) What is the man’s average speed for the whole
journey?
b) What is the man’s average velocity for the whole
journey?
•A man walks 7km East in 2hrs and then 2.5km West in 1hr.
a) What is the man’s average speed for the whole
journey?
b) What is the man’s average velocity for the whole
journey?
24. •Calculate the speed of a car that
went a distance of 125km in 2
hrs.
•A baseball is thrown a distance
of 60m. What is its speed if it
takes 0.5s to cover the distance?
25. •How much time does it take for a
bird flying at a speed of 45km/h to
travel a distance of 1,800km?
•A motorist travels 406km in 7hrs.
What was the average speed in
km/h and m/s? (1km = 1000m, 1h =
3600s)
26. •Lisa del Valle traveled 50km/hr with a
total distance of 400km. How long did
it take for her to reach her
destination?
•A plane’s average speed between two
cities is 600 km/hr. If the trip takes 2.5
hrs. how far does the plane fly?
27. ACCELERATION
Is change in velocity with
respect to time.
•3 ways to change velocity:
•Change in speed
•Change in direction
•Change in speed and
direction
28.
29. •A rocket powered sleds are used to test the
human response to acceleration. If a rocket-
powered sled is accelerated to a speed of 444m/s
in 1.83 seconds then what is the acceleration of
the sled?
•As a car comes to a stop, it slows from 25m/s in
2.8s. Find the acceleration of the car?
•Determine the acceleration of a coaster which
moves with a velocity of 10 m/s, after 2s its
velocity is increases to 26 m/s
30. Acceleration with
Conversion
A car accelerates
from rest to a
speed of 36 km/h
in 20 seconds.
What is the
acceleration of
the car in m/s2?
31. •A car starting
from rest is
accelerated
5m/s2. Find its
velocity after 5
seconds.
32. EXAMPLE:
The motorcycle first moved from 0 to 40m. It
took 5s to do this. From 0 the motorcycle is
moving in its current state.
We can observe the following:
1. The motorcycle moved 40m to the right in
5s. The rate at which the motorcycle
changes its position is 40m per 5s or
40m/5s to the right
33. EXAMPLE:
If the motorcycle maintains its current
state, having a rate of 40m/5s
We can observe the following:
It means that after another 5s, the
motorcycle will move an additional 40m
to the right, which is a total of 80m for
10s, and so on.
Editor's Notes
Perhaps the first thing that comes to our mind is that force is simply a push or pull movement. But a more scientific concept of force is obtained when we consider the effect of that push or pull
