![Learning Objective
At the end of the lesson,the learners are expected
to:
a.Define and identify the factors that affects
momentum and impulse;
b.Relate impulse and momentum to collision of
objects (e.g.,vehicular collision) [S9FE-IVb-36]and;
c.Appreciatetheimportanceof understanding
thecausesand effectsof collision-related
damages/injuriesby citing real lifesituations.](https://image.slidesharecdn.com/momentumandimpulsegrade9sciencequarter4week3lesson1-240606074051-98bff858/85/Momentum-and-Impulse-_-Grade-9-Science-Quarter-4-Week-3-Lesson-1-pptx-2-320.jpg)
![Submission Guidelines
-Organize your assignment neatly in a
document.
-Clearly label each part (Part 1
,Part 2,Part 3).
-Show all calculations and provide explanations
wherenecessary.
- Include any additional resources or references
you used for research.
-Submit your assignment by [insert submission
method and deadline].](https://image.slidesharecdn.com/momentumandimpulsegrade9sciencequarter4week3lesson1-240606074051-98bff858/85/Momentum-and-Impulse-_-Grade-9-Science-Quarter-4-Week-3-Lesson-1-pptx-45-320.jpg)
Momentum and Impulse _ Grade 9 Science Quarter 4 Week 3 Lesson (1).pptx
- 2. Learning Objective At the end of the lesson,the learners are expected to: a.Define and identify the factors that affects momentum and impulse; b.Relate impulse and momentum to collision of objects (e.g.,vehicular collision) [S9FE-IVb-36]and; c.Appreciatetheimportanceof understanding thecausesand effectsof collision-related damages/injuriesby citing real lifesituations.
- 4. What will happen to the ball if it hits the board instead of inside the ring?
- 5. SPEED -ads + -d Therate ofmotion;actor stateofmoving.
- 6. -as + lo + The rate of change of position along a straight linewith respect oftime. VELOCITY
- 7. The rate of change of position along a straight linewith respect oftime. -sk + -L -celb ACCELERATION
- 8. M ASS -p + -gra Thepropertyofa bodythat isa measureofthe amount ofmaterial it contains and causes it to haveweightin a gravitational field.
- 9. -ry -my + -g MOMENTUM is a quantity that describes an object's resistance to stopping (a kind of "moving inertia").
- 10. -S + -L + -A IMPULSE is a quantity that describes the effect of a net force acting on an object (a kind of "moving force").
- 11. Let's assume there's a car speeding toward you, out of control without its brakes, at a speed of 27m/s(60 mph).Can you stop it by standing in front of it and holding out your hand?
- 12. Unless you're Superman, you probably don't want to trystoppinga movingcar byholdingout your hand. It'stoobig,andit'smovingwaytoofast.
- 13. Howabout ifyou bumpedtoanother player bigger than you?
- 14. Thingsweneed toconsider in defining momentum The object hasa mass The object is moving Any moving object with aquantity of matter hasmomentum.
- 15. Where: p is the momentum in kilogram meter per second (kg.m/s) m isthemassof themoving object in kilogram (kg) v refers to velocity of the moving object in meter per second (m/s) Mathematically it is expressed as: P=m x v
- 16. What isthemomentum of a22-kg cart which travelsat 1 .2m/s? Given: mass(m)-22kg velocity (v)-1.2 m/s momentum (p)-? Formula:
- 17. What isthemomentum of a22-kg cart which travelsat 1 .2m/s? Solution: p =mv p =(22kg)(1.2m/s) p =26.4kg .m/s
- 18. What isthemomentum of an object that isnot moving? If any object of any massisnot moving,it has zeromomentum sinceitsvelocity iszero.
- 19. What doyou think will happen to the busafter ifit passesalonga curvy road? a.It willslowdown b.It willspeedup c.Itsvelocitywillspeedup
- 20. How will you describe the velocity ofthebus?
- 21. What can you say about themassof thebus? a.It increases b.It decreases c.It doesnot changeat all
- 22. When the object slows down or moves faster, its velocity decreases or increases. If there isa changein thevelocity or the mass of an object, there is also a change in momentum. And that change in momentum is called IMPULSE.
- 23. Impulse=changein momentum Forceisneeded tochangethe momentum of thebody. Thisforce(F)multiplied by thetimeof contact (t)isknown asIMPULSE(I).(I =Ft) I =Ft =mv I =P (p =mv) TheSI unit for momentum (p)and impulse(I)is newton-second (Ns)or kilogram-meter per second (kg .m/s) Bodieschangetheir momentum through collisions.
- 24. SampleProblem 2: An offensive player passesafootball of mass 0.42kg with avelocity of 25.0 m/sduesouth.If the player is in contact with the ball for 0.050 s,what isthemagnitudeof theaverageforce heexerts? Given: Formula: Ft =mv mass(m)-0.42kg velocity (v)-25.0 m/s,south time(t)-0.050 s force(F)-?
- 28. What doyou think istheimpulseofan object movingwith constant momentum? constant -nochange There is no impulse or zero impulse for objectsmovingwith constant momentum.
- 29. Any moving object hasmomentum p =mv Impulseisthechangein momentum of amoving object. I =Ft =mv
- 30. What will happen to a moving object if it collides with another object?
- 31. Scenario#1 : Suppose you are playing billiard.The cue ball and ball #1are initially at rest. Then you use the tako to hit ball#1 .
- 32. Answer thefollowingquestions: 1.What did you observe on the massof thecueball beforeand after collision? How about ball #1? Thereisnochangeinmass. 2. Since it is initially at rest, what are the initial velocities of the balls? Zero 3. After collision, is there a change in velocity of the cue ball? ball#1 ? Yes
- 33. Answerthe followingquestions: 4. Is there a change in momentum ofthecueballandball#1 ?Why? Y esbecause there isa change in the velocityofthecueballandball#1 . Since the cue ball and ball #1have a change in velocity after collision, then both balls have a change in momentum. In collision, an object that experiences a greater change in momentumhasa greater impulse
- 34. Therefore, this shows the relationship between momentum and impulse. A change in momentum is equaltoimpulse.
- 36. Whichofthe twocars has the greater changeofvelocity? Car A
- 37. 2.Which car hasthegreater changein momentum?Explain your answer. Car A,becauseit travelsfaster than Car Bthereforeit hasgreater velocity.
- 38. 3.Which car hasthegreater impulse? CarA,becauseit has greater changein momentum.
- 40. ASSESSMENT Directions. In a 遜 crosswise , apply the momentum the missing values in formula (p =mv ) to determine each item. A.Momentum 1 .p =200 kg揃m/s;v=?;m=50 kg 2.p =?;v =25m/s ;m=1 500 kg 3.p =600 kg揃m/s;v=30 m/s;m =? 4.p =2500 kg揃m/s;v =?;m =1 5kg 5.p =1 000 kg揃m/s;v=50 m/s;m = ?
- 43. ASSIGNMENT Part2.Solvethefollowingproblems: a.Calculatethemomentumof anobjectwitha massof 300kgandavelocityof 1 0m/ s. b.Calculatetheimpulseexperiencedbya1500 Nforceactingonanobjectfor4seconds. c.Asoccer ballhasamassof 0.4kgandis kickedwithavelocityof 1 6m/ s.Calculateits momentum.
- 44. Part 3.Real-W orldApplications Research and describe one real-world application where the understanding of momentum and impulse is crucial. Explain how these concepts are utilized in that application.
- 45. Submission Guidelines -Organize your assignment neatly in a document. -Clearly label each part (Part 1 ,Part 2,Part 3). -Show all calculations and provide explanations wherenecessary. - Include any additional resources or references you used for research. -Submit your assignment by [insert submission method and deadline].