4. 1. Describe momentum and identify its
equation relating momentum to mass and
velocity
2. Relate impulse and momentum to collision
of objects
3. Apply the equation learned to compute for
momentum.
•OBJECTIVES:
5. UNLOCKING
OF
DIFFICULTIES • Velocity- is the rate of change of its position with
respect to a frame of reference
• Mass – a quantitative measure of inertia, a
fundamental property of all matter.
• Vector quantity – is defined as the
physical quantity that has both direction as well as
magnitude.
• Force- an influence that can change the motion of
an object
• Collision- any event in which two or more bodies
exert forces on each other in relatively short time
9. Momentum is equal to the product of
mass and velocity
Mathematically, it is expressed as
p=mv
Where:
p= momentum ( kg∙ m/s )
m= mass (kg)
v= velocity (m/s)
11. J= ∆p
Impulse is expressed as
J= F∆t
Where:
I= impulse
F= force
t=time
12. • Considering the car has Car A is travelling at 80 m/s
while Car B is traveling at 30 m/s. Which of the two cars
would be more difficult to stop?
80 m/s
30 m/s
14. • Suppose you are travelling from
Bicol to Manila, what do you
think will happen to the bus after
it passes along a curve road in
Quezon?
15. • After passing a curve road, the bus
travels in a straight path. How will
you describe the velocity of the
bus?
16. • Let’s say for instance, the bus has 20
passengers going to Naga, upon
reaching the bus stop in Tigaon, 4
passengers get off. Then when the bus
reached the Ocampo terminal, another 4
passengers get off.
• How will you describe the mass of the
bus?
17. CONCLUSION
When the object slows down, the velocity
decreases.
When the object moves faster, the velocity
increases.
If there a change in velocity/mass of an object,
there is also a change in momentum.
Objects change their momentum through
collisions.
18. Direction: Read each item carefully and choose the letter of
the correct answer.
EVALUATION
1. Which has more momentum, a
heavy truck moving at 30 m/s or
a light truck moving at 30 m/s?
a. Heavy truck
b. Light truck
c. Both have the same momentum
d. Cannot be determined
19. 2. The momentum for any object is
calculated by ________.
a. dividing mass by velocity.
b. multiplying mass by velocity.
c. multiplying mass by acceleration.
d. dividing force by acceleration
20. 3. What kind of quantity is
momentum?
a. Scalar
b. Vector
c. Impulse
d. All of the above
21. 4. A heavy object and a light object have the
same momentum. Which has the greater
speed?
a. Heavy object
b. Light object
c. Both have the same speed
d. the heavy object has a zero speed, while
the light object has a nonzero speed
22. 5. Applying the equation learned,
answer the problem:
• A bowling ball whose mass is 4.0
kg rolls at a rate of 2.5 m/s. What
is its momentum?
Suppose you are playing a basketball, what will happen to a ball if it his the board instead of inside the ring?
How about if you bump to another player bigger than you?
