Upcoming SlideShare
×

Notes rb labs 3 and 4

• 144 views

More in: Technology , Education
• Comment goes here.
Are you sure you want to
Be the first to comment

Total Views
144
On Slideshare
0
From Embeds
0
Number of Embeds
0

Shares
19
0
Likes
1

No embeds

Report content

No notes for slide

Transcript

• 1. Forces and Motion
• 2. Forces and Motion Lab 1 “Graphing Your Motion”; Pages 1-7 Lab 2 “Gravity’s Pull”; Pages 9 – 16 Lab 3 “Keep on Truckin’ ”; Pages 15 – 28 Lab 4 “Laws of Motion”; Pages 29 – 34 Lab 5 “ Work Made Easy”; Pages 41 – 56 Lab 6 “ Power to do Work”; Pages 57 – Lab 7 “ The Force of Friction”; Pages 35 -40
• 3. Forces and MotionLab 3 “Keep on Truckin’ ”;Pages 17-28Lab 4 “Laws of Motion”; Pages29 – 34
• 4. Lab 3Keep on Truckin’Keep on Truckin’
• 5. Key ObjectivesKey ObjectivesThe Student will:– Investigate and understandconcepts of speed, velocityand acceleration whendescribing motion.
• 6. Key ObjectivesKey ObjectivesThe Student will:– Understand that velocitymeasures the average speedof an object in a specificdirection
• 7. Key ObjectivesKey ObjectivesThe Student will:Take measurements tocalculate the speed of amoving object
• 8. Key TermsKey TermsSpeedVelocityAcceleration
• 9. SpeedSpeedThe change in position of anobject per unit of time:– Miles per hourMPH– Meters per SecondM/Sec
• 10. VelocityVelocityThe measurementof the speed of anobject in a specificdirectionN, NE, E, SE, W ,NW,, S, SW, North Northeast East Southeast West Northwest South Southwest
• 11. AccelerationAccelerationThe increase in speed of anobject per unit of timeWritten in Meters per secondper secondM/sec2
• 12. Essential LearningsEssential LearningsAverage speed is calculated bydividing distance by times = d/tSpeed = DistanceTime
• 13. Essential LearningsEssential LearningsVelocity describes both thespeed and the direction of themotion of an objectIt is reported in meters persecond (m/sec) in a specificdirection (m/sec N, E,W or S)
• 14. Essential LearningsEssential LearningsAcceleration is the change invelocity per unit of time– m/sec2(meters per second per second)An object moving with constantspeed/velocity has noacceleration
• 15. Essential Learnings:Essential Learnings:Acceleration iscalculated bydividing thechange invelocity bytimea = vf – vita = accelerationvf = final velocityvi = initial velocityt = time
• 16. Essential LearningsEssential LearningsOn earth weight in Newtons is~10 your mass in KiligramsOn earth, acceleration due tothe force of gravity is:9.8 m/sec2(meters per second persecond)
• 17. Essential LearningsEssential LearningsA decrease in velocity isnegative acceleration– Deceleration
• 18. Essential LearningsEssential LearningsObjects moving in a circularmotion are constantlyaccelerating because velocityand direction are constantlychanging
• 19. Essential LearningsEssential LearningsA distance/timegraph foracceleration isalways a curve
• 20. One More Thing… Constant Accelleration– http://www.youtube.com/watch?v=BGfPU_gyqm8 Acceleration Plus and minus– http://www.youtube.com/watch?v=ixF_Tf4pmE8
• 21. Lab 4Newton’s 3 LawsNewton’s 3 Laws
• 22. Watch This….. Newton’s Three Laws of Motion Newton’s Intro… Intro….– http://www.youtube.com/watch?v=UVdqxYyFRKY
• 23. Key ObjectivesKey ObjectivesThe student will:– Investigate and understandthe effects of gravity andNewton’s laws of motion
• 24. Key ObjectivesKey ObjectivesThe student will:– Define Force and distinguishbetween balanced andunbalanced forces
• 25. Key ObjectivesKey ObjectivesThe student will:– Explain the effects ofbalanced and unbalancedforces on the motion of anobject
• 26. Key ObjectivesKey ObjectivesThe student will:– Identify situations that illustrateeach law of motionGive examples of the effectsof Inertia(Newton’s First Law)
• 27. Key ObjectivesKey ObjectivesThe student will:– Explain how force, mass andacceleration are related(Newton’s Second Law)
• 28. Key ObjectivesKey ObjectivesThe student will:– Solve basic problems giventhe formula;Force = mass x acceleration(F=ma)
• 29. Key ObjectivesKey ObjectivesThe student will:– Demonstrate action andreaction forces and how theyapply to motion(Newton’s Third Law)
• 30. Key ObjectivesKey ObjectivesThe student will:– Explain how force and motionapply to car safety andtechnology, rockets andrestraining devices
• 31. Key TermsKey TermsNewton’s First Law– InertiaNewton’s Second LawNewton’s Third LawBalanced ForcesUnbalanced Forces
• 32. Newton’s First LawNewton’s First LawInertiaInertia– A body at restwill remain atrest until a forceacts upon itand…
• 33. Newton’s First LawNewton’s First Law“A body will remainin motion andtravel in a straightpath and constantspeed until a forceacts upon it.”
• 34. Newton’s First LawNewton’s First LawInertiaInertia- Often calledthe “Lazy Law”…itsays things do whatthey are doing untila force causes achange to occur
• 35. Newton’s Second LawNewton’s Second Law“The accelerationof an objectdepends on themass of the objectand the amount offorce applied”
• 36. Newton’s Third LawNewton’s Third Law“Whenever one objectexerts a force on another,the second object exertsan equal and oppositeforce on the first”ActionAction  Reaction orReaction orCauseCause EffectEffect
• 37. Balanced ForcesBalanced ForcesWhen forces are equal orbalanced no change in themotion of an object will beobserved
• 38. Unbalanced ForcesUnbalanced ForcesWhen forces are unequal orunbalanced, a change in themotion of an object can beobserved:– Bowling ball collides with a tennisball
• 39. Essential LearningsEssential LearningsSir Isaac Newton (1642 –1727) The “Father of Calculus”and one of the greatestPhysicists everThrough observations andcalculations discovered threelaws of motion.
• 40. Essential LearningsEssential LearningsNewton’s first law (Inertia)states:– Any object at rest will remainat rest until a force acts uponit to change the objectsposition/motion.
• 41. Essential LearningsEssential Learnings– In addition, any moving objectwill remain in motion at aconstant speed and in astraight line until anotherforce acts upon it to changeits motion..
• 42. Essential LearningsEssential LearningsNewton’s second law :– F=ma– The acceleration of an objectis determined by the mass ofthe object and the amount offorce needed to change thespeed
• 43. Essential LearningsEssential Learnings– Note that:Only an unbalanced forcecan change an objectsmotion
• 44. Essential LearningsEssential LearningsNewton’s third law :– For every action there is anequal and opposite reaction.– Often calledAction  ReactionCause and Effect
• 45. Newton’s Laws ReviewNewton’s Laws Reviewhttp://www.youtube.com/watch?v=jFI29NoG-Ko
• 46. Newton’s Law SongNewton’s Law Songhttp://www.youtube.com/watch?v=PkAO8F-Tm-w