CHALLENGER'S LOST LESSONS - ER - NASA

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54A Classroom Version of Christa’sNewton’s Laws Lost LessonThe following demonstration closely replicates Christa’s experimentseen in the above video:Background:The lost Newton Laws lesson offers students and teachers amathematical means of demonstrating the law of momentum, derivedfrom Newton’s third law. The expression: (F)orce times the (T)imethe force is applied = (E)quals the (M)ass times the (V)elocity of theprojectile. Since force and time is equal in both instances, and themass of the billiard ball is twice that of the steel ball, the equationwhen solved for the velocities of the respective balls has the steelball traveling twice the speed of the billiard ball. The experimentbelow can roughly confirm the momentum equation derived fromNewton’s laws.Materials:1. A billiard or golf ball2. A steel ball bearing or marble about half the weight ofthe billiard/golf ball3. Two one Meter Long V-grooved 2” by 4” buildingframe boards4. Video camera and VCR5.A small scale for measuring weights6. Two ball point pen spring assemblies7. A one meter long scribed posterSteel Ball Bearing and Billiard Ball on V-grooved Tracks
55Process:Cutaway view of spring release mechanism providing equalforces to each ball.*1. Collect the listed materials. Using a router with a “V” bit,scribe the channel for the ball bearing and billiard ball in thecenter of each board parallel to the boards’ lengths.*2. Position the boards in lengthwise contact with a yardstick, meter stick, or scribed poster laying lengthwise on thetable beside the v-slotted tracks. Have the end of themeasuring media coincident with the start of the tracks.*3. Place each ball in the v-groove at the start of therespective tracks. Mount the video camera overhead on atripod with the camera view centered on the tracks,perpendicular to the plane of the tracks.*4. Start the videoing of the activity.*5. Select two students to release the ball point pen springsby pressing each pen’s release button. (Note: Prior to theactual demonstration, have the students practice snapreleasing the springs. This is done to calibrate the applicationof the applied force. Actually, a single pen spring can be
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CHALLENGER’S LOST LESSONSProject
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Page 5 and 6: 5Obviously, because of the loss of
Page 7 and 8: 7collectively. Other constraints we
Page 9 and 10: 9Hydroponics ChamberAnother aspect
Page 11 and 12: 11been ingested by crewmembers or e
Page 13 and 14: 13of the mass of each other. This w
Page 15 and 16: 15effervescent tablet, and a water
Page 17 and 18: 17would have been observed instead
Page 19 and 20: 19with an insert to provide frictio
Page 21 and 22: 21Challenger’s Live Lost LessonsW
Page 23 and 24: 23[For a preliminary or concluding
Page 25 and 26: 25THE LOST HYDROPONICS CHAMBER LESS
Page 27 and 28: 27Hold down CTRL Key and click here
Page 29 and 30: 29i.e., the leaves may simply droop
Page 31 and 32: 31After each daily spraying of the
Page 33 and 34: 332. What impact would ambient ligh
Page 35 and 36: 35Christa Practicing Bar Magnet in
Page 37 and 38: 37Observe the movement of the right
Page 39 and 40: 39would permit filming. The movie w
Page 41 and 42: 41What Happened?(Study the video ta
Page 43 and 44: 43How do you believe Christa’s su
Page 45 and 46: 45the final lines of force pattern.
Page 47 and 48: 47permanent magnet.)The assembly of
Page 49 and 50: 49THE LOST NEWTON’S LAWS LESSON
Page 51 and 52: 51Such an experiment reminds educat
Page 53: 53equal for both projectiles. Cups
Page 57 and 58: 57Questions to Answer:1. What did y
Page 59 and 60: 59THE LOST EFFERVESCENCE LESSONThe
Page 61 and 62: 61dioxide. The gas was contained in
Page 63 and 64: 63THE LOST CHROMATOGRAPHY LESSON“
Page 65 and 66: 65Hold down CTRL Key and click on:c
Page 67 and 68: 67of Christa to see how her apparat
Page 69 and 70: 69THE LOST SIMPLE MACHINES LESSONIn
Page 71 and 72: 71station actually has a trolley ty
Page 73 and 74: 733) A screwdriver and wood screws.
Page 75 and 76: 75*3. Hammer a nail lightly into th
Page 77 and 78: 77What Would Have Happened on Chall
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Page 81 and 82: 81The “The Ultimate Field Trip”
Page 83 and 84: 834. If you were to teach the seven
Page 85 and 86: 85Unlike, the first live lesson whi
Page 87 and 88: 87Concerning the tripod, Pilot Mike
Page 89 and 90: 89A Classroom Version of Christa’
Page 91 and 92: 91easily done in the KC-135 aircraf
Page 93 and 94: 93and gaseous substances on earth a
Page 95 and 96: 95Wright Brothers’ AirplaneIntern
Page 97: 97Instructions for using the attach
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