Detailed Lesson Plan in Physics

DETAILED LESSON PLAN I – Objectives By A. B. C. D.

the end of the lesson, the students will be able to; Define momentum List the factors that affect momentum Explain how mass and velocity affects momentum Calculate the value of unknown variables (p, m, and v)

II – Subject Matter Topic: Values: References:

Momentum Decision making Grolier Encyclopedia of knowledge http://www.physicstutorials.org/home/impulse-momentum/momentum

III – Materials Blackboard, chalk, and drawn diagram. IV – Procedure Teacher’s Activity

Student’s Activity Motivation

Good Morning Class…

Good Morning Sir!

Let us pray first…

(One Student will lead the prayer)

Now let’s check the attendance…

(Students will say present as the teacher calls in their name) I’ll get bumped on that person.

Class, imagine that you are running as fast as you can but didn’t notice that someone is just few inches away from you. What will happen? Why?

Because it will be difficult to stop all of a sudden when you are at the peak of running.

That is because of momentum. Lesson Proper In our today’s lesson we will study about momentum and understand the factors affecting it. Momentum is the difficulty faced by a moving You have said a while ago that it is difficult to object to undergo a sudden stop. stop all of a sudden when you are at the peak of doing something. We’ve said that it is momentum. Now from that experience, what is the definition of momentum? Very Good. Momentum is affected by two factors which are mass of the object and its velocity. Let’s find out how these factors affect momentum. Now look at this diagram. (Teacher shows diagram no. 1) Which would be harder to

The fast runner is harder to stop because it has more momentum.

stop, the fast runner or the slow runner?

Velocity.

That’s right. What could be the factor?

Runner 1 because he is heavier.

Very good. Now take a look at this second diagram. (Teacher shows diagram no. 2) You can see here two runners, runner 1 and runner 2. Both have the same velocity but runner 1 is twice the mass of runner 2. Which would be harder to stop?

Mass.

Very good. Clearly what is the factor that affects the momentum in that situation? The mathematical formula therefore for momentum is p=mv where p – momentum m – mass v – velocity What is the unit for mass? What is the unit for velocity? Now what would be the unit for momentum? Very good! From the formula of momentum, what can you say about the relationship between the momentum and the mass and velocity? What does direct proportion means? That is correct. Now let’s have an example.

Kg m/s kg*m/s Mass and velocity are directly proportional with momentum. As one variable increases, the other one also increases, vice versa.

(Students are given time to solve and one student will solve at the blackboard)

A car is moving at a velocity of 10 m/s. Its mass is 500kg. What is its momentum? (Teacher writes it at the blackboard) V – Generalization 

What does momentum means? Momentum is mathematically defined as the product of mass and velocity of a body which is p = mv. Conceptually speaking momentum is the difficulty faced by a moving body/object to undergo sudden stop.



What are the factors that affect momentum? Mass and velocity



What is the relationship of momentum to the mass and velocity? The mass and velocity are directly proportional to the momentum meaning whenever one increases the other one will also increase and vice versa.

VI – Evaluation/Activity

The students will be given activity sheets to ponder their understanding on the lesson. VII – Assignment Study about impulse momentum.