MOMENTUM

MOMENTUM

Aren S. Valerio

PRAYER

Poll

ATTENDANCE

• Horizontal Motion

• Vertical Motion

DESK EXERCISE

Learning Competencies:

• Relate impulse and momentum to collision of objects (e.g., vehicular collision) S9FE-IVb-36

• Specific Objectives:

• 1. Analyze the factors that affect momentum;

• 2. Solve problems using the concept of impulse and momentum

• 3. Apply the momentum and impulse in real life scenarios

REVIEW

Cannon ball firing at different angles

Multiple Choice

Which angle/s reached longest range?

• 75⁰

• 60⁰

• 45⁰

• 30⁰

Multiple Choice

Which angle/s reached the highest point?

• 90⁰

• 75⁰

• 60⁰

• 45⁰

Multiple Select

Which pair of angles will end up landing on similar points?

• 75⁰ & 15⁰

• 60⁰ & 30⁰

• 90⁰ & 15⁰

Multiple Choice

Which of the following angle of release will most likely hit the target?

• 75⁰

• 60⁰

• 45⁰

• 30⁰

PREDICT ON THIS!

Multiple Select

Q#1. Which of the two balls of the same masses is hard to stop?

• A ball thrown at a high speed

• A ball thrown at a low speed

Multiple Select

Q#2. Which of the balls of the same velocity is hard to stop?

• A pinpong ball

• A baseball

PREDICT ON THIS!: TWO VEHICLES MOVING AT THE SAME TIME BUT HAVING DIFFERENT MASSES.

Multiple Select

Q#3. Which of the vehicle is more difficult to stop?

• lighter one

• heavier one

Multiple Select

Q#4. Which vehicle has more momentum?

• lighter one

• heavier one

Open Ended

How can you describe momentum based on the different situation presented?

Infer on what two factors does momentum depend on?

Multiple Choice

Which of the two cars would be more difficult to stop?

• car A

• car B

Multiple Choice

Which of the two cars has more momentum?

• car A

• car B

Multiple Select

What two factors momentum depend on?

• velocity

• time

• force

• mass

Multiple Choice

Which of the two car has more impulse?

• car A

• car B

GUIDE QUESTION

1. What are the given quantities? (GROUP 1)

2. What is the initial momentum of the car? (GROUP 2)

3. How long did it take for the car to stop after applying brakes? (GROUP 3)

4. How much impulse was experienced by the car during the application of brakes? (GROUP 4)

ANSWER

Given: m=1524kg; F=140N or 140 kgm/s ; v=14m/s

Find: P , t , I

Formula: P = m.v , Since I = ΔP t = P / F ; I = F.t

Answer: P = 21 336 kg m/s , t = 152.4 s , I = 21 336 kg m/s

Let's apply the concept of momentum and impulse to explain the given situation.

Open Ended

Vehicle usually indicate the maximum capacity of passengers. Why do you think it is important not to exceed its maximum capacity? Use the concept of momentum in explaining your answer.

PHILIPPINE TRANSPORTATION

SAMPLE VEHICULAR CAPACITY

Open Ended

Drivers are usually prohibited from over speeding. They are required to follow the prescribed speed limit on different types of road. Why do you think the government imposes a speed limit? Depend your answer using the concept of impulse?

SPEED LIMIT IN THE PHILIPPINES

MMDA SPEED LIMIT TESTING

ASSESSMENT

Multiple Choice

1. Momentum is possessed by all objects.

• True

• False

Multiple Choice

2. Impulse is always equal to the change in momentum?

• True

• False

Multiple Choice

3. A sumo wrestler at rest has greater momentum than a gliding ice skater?

• True

• False

Multiple Choice

4. A truck can still change its momentum if minimal force will be applied over a long period of time?

• True

• False

Multiple Choice

5. During a jump shot, bending your knees as you land help your decrease the impact force?

• True

• False

Additional Activity