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The Effect of Air Resistance on Terminal Velocity
The Effect of Air Resistance on Terminal Velocity was based on the relationship between Air resistance or drag force and Terminal Velocity. In the experiment terminal velocity was measure as a function of mass for the falling coffee filters used and were included in the data to choose between the two models for the drag force. The coffee filters were selected due to their light weight to achieve terminal velocity at a short distance. The materials that were used were LabQuest, Motion Detector, and 5 Coffee Filters
Before the experiment there were preliminary questions asked. For example it was asked “If there was no air resistance, how would the rate of fall of a coffee filter compare to the rate of fall of a baseball?” it was concluded the coffee filter and baseball will both fall at the same rate if there was no air resistance. Due to Newton 2nd Law it is stated that all objects regardless of mass will fall at the same rate because of free fall same acceleration of 9.8m/s2.
Experimental Design
Purpose: To observe the effect of air resistance on falling coffee filters which will determine how the terminal velocity of a falling object is affected by air resistance and mass.
IV: # of Filters DV: Terminal Velocity VT(m/s) and VT2(m2/s2)2
Hypothesis: If the number of filters nested together increases every trail then the terminal velocity will increase.

Coffee Filter
Coffee Filter


  1. Connect the Motion Detector to DIG/SONIC input of the LabQuest
  2. Support the Motion Detector about 2m above the floor, pointing down, as shown in Figure 1.
  3. Tap the graph button. A graph will appear on the screen. The vertical axis has distance scaled from 0 to 3m. The horizontal axis has time scaled from 0 to 4s.
  4. Place a coffee filter in the palm and hold it about 0.5m under the Motion Detector. Do not hold the filter closer...