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Day 22 3/3/2011 objective: Finish data collection for human runners then produce a position versus time and velocity versus time for all six motions (12 graphs all together). Students will print one of the twelve and graphs and describe the results (in front of the class if they’re brave).
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Day 22 3/3/2011 objective: Finish data collection for human runners then produce a position versus time and velocity versus time for all six motions (12 graphs all together). Students will print one of the twelve and graphs and describe the results (in front of the class if they’re brave). Vocabulary: acceleration Warm up: Observe the ‘Human Motion’ graph and table. Fill in the velocity column then produce the velocity versus time graph. Then produce a narrative (a story) that would fit with the motion.
Day 23 3/7/2011 objective: Finish producing all motion graphs from human runners in Excel then discuss Observe and discuss ‘clean’ version of accelerated motion generated with motion detector and identify important points (max + velocity, max – velocity, zero velocity, initial position, final position, acceleration, etc). Vocabulary: m/s/s, meters per second per second, m/s2 Warm up: What does a straight line mean on a d vs. t graph? What does a curved line mean on a d vs. t graph? What does the slope of a d vs. t graph tell you? What does the slope of a v vs. t graph tell you?
Day 24 3/8/2011 objective: Finally wrap up human runners Dress rehearsal lab for test #3: produce two motion graphs (d vs. t and v vs. t) for a ball accelerating down a ramp then decelerating along a flat surface. Describe and explain the results. Vocabulary: apex, zenith, crest Warm up: Describe the three ways you can accelerate and then give an example of each.
Day 27 3/11/2011 objective: Share scores from multiple choice Begin unit on accelerated motion Measure a famous physical constant: acceleration due to gravity. Vocabulary: g’s Warm up: Use the following three equations Vaverage = d/t Vfinal = 2 Vaverage a = (Vfinal – Vinitial)/Δt to find distance as a function of acceleration and time.
Day 29 3/15/2011 objective: Shuffleboard: Find the acceleration of a book sliding along the floor. See how the initial velocity provided by your push affects the acceleration Vertically launched marble: Use hang time to predict the altitude of a vertically launched projectile, then check your prediction with reality. Vocabulary: free fall Warm up: Write two acceleration problems, one free fall and one car crash and solve.
Day 31 3/17/2011 objective: Start the distracted driver lab (how mass affects acceleration down a ramp and acceleration during a car crash). Finish vertically launched projectiles More boring practice problems Vocabulary: projectile Warm up: Drop a ball from a known distance and calculate the impact velocity. After impact measure the hang time of the ball and find the rebound velocity. Compare the impact velocity to the rebound velocity? What causes the change in velocity?
Day 32 3/18/2011 objective: Galileo had the leaning tower of Pisa and we have the bleachers (using fall time to determine fall distance and impact velocity) Vertically launched taters (using hang time to determine muzzle velocity and maximum altitude) Vocabulary: Galileo Warm up: What measurements/assumptions will you make by the bleachers? What calculations will you perform? What measurements will you make for the potato gun?
Day 33 3/21/2011 objective: Wrap up vertically launched projectiles (muzzle velocity and altitude as a function of hang time) Do high-tech version of the distracted driver (acceleration down a ramp and during a car crash as a function of vehicle mass) Vertically launched humans (using hang time to predict vertical leap) Vocabulary: hang time Warm up: Do a sample calculation from Friday’s labs (one for the bleachers and a second for the taters).
