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Free-fall lab

Free-fall lab. Acceleration due to gravity. Gravity (on Earth) pulls objects downward at a rate of 9.8 m/s 2 ignoring air resistance. Pre-lab example.

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Free-fall lab

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  1. Free-fall lab

  2. Acceleration due to gravity Gravity (on Earth) pulls objects downward at a rate of 9.8 m/s2 ignoring air resistance

  3. Pre-lab example Sean is standing on top of a building that is 25 meters tall and asks me to throw him a can of Sprite. I am hesitant because I know that I can’t throw very high, so I test how high I can throw with a tennis ball first. I throw my tennis ball up and time how long it is in flight. The time the ball is in the air is 3.9 seconds. Should I attempt to throw the Sprite to Sean?

  4. Draw it out d = ½ gt2 Time = 3.9 s

  5. Let’s see if we were right Oops

  6. Pre-lab Problems

  7. Part 1 – What is the acceleration due to gravity? d = 5.6 m Timer

  8. Part 2 – What is your reaction time? Don’t forget to record the DISPLACEMENT of the ruler, not necessarily the number you read on the meter stick

  9. Part 3 – How high can you throw? Here’s some free advice: Try to throw the ball straight up and down! Timer

  10. Images http://www.physicsclassroom.com/Class/1DKin/U1L5d6.gif http://acept.asu.edu/courses/phs110/ds2/9falling.gif http://www.edithwharton.org/images/store/resize/1105.jpg

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