Exploring Free Falling Physics: Data Collection, Formulas, and Impact Analysis
Dive into the world of free falling physics with data collection experiments, commonly used formulas, and an analysis of the impact of air-dropped supplies. Explore questions about the height of drops, speed calculations, and integrity assessments. Mathematically explain the underlying principles behind the physics formulas.
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Presentation Transcript
Differences & Rate of Change Free Falling
Collect some data groups of 3 Roles in each group 1. Meter stick holder 2. Ball dropper 3. Time recorder Height (m) Falling Time (sec) Avg. Speed (m/sec) 0.20 0.40 0.60 Completing data table Compute 3 measurements for each time Use the median value 0.80 1.00
Formulas often used in physics = v v gt 0 1 2 = + 2 y y v t gt 0 o Assuming object dropped (initial velocity zero): = v gt 1 2 = 2 y y gt o
Impact of Delivery A bundle of supplies is to be air dropped. The bundle s height from the ground t seconds after it was dropped is given by the equation h(t) = 500 16.1 t2 with height h(t) measured in feet. The bundle can withstand a speed of no more than 165 feet per second. Will it survive the impact of this drop?
Impact of Delivery Questions 1. From what height was the bundle dropped? 2. How long will it take the load to reach the ground? 3. Estimate the average speed of the bundle from the moment it was dropped until it reaches the ground. 4. What does this tell us about the integrity of the load at the moment of impact?
Impact of Delivery More questions 5. How far does the bundle fall in its last 2 seconds of descent? 6. Estimate the bundle s average speed during that 2-second interval. 7. Estimate the bundle s average speed during its last 1 second of descent. 8. How can we obtain a more accurate estimate of the speed at impact?
