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Homework Help: Urgent HW help-no math just common physics sense

  1. Jan 27, 2010 #1
    If you increase the area of the parachute what would happen? (select all that apply)

    A. parachute will descend slower
    B. parachute will move upward
    C. parachute's drag force will increase
    D. Nothing changes
    On the windy day, why is it difficult to ride a bike? (select all that apply)

    A. Because air density increased
    B. Because drag coefficient increased
    C. Because drag force increased
    D. Because the wind velocity increased

    both questions have mult. answers supposdly.
     
  2. jcsd
  3. Jan 27, 2010 #2
    What were your thoughts on each?
     
  4. Jan 27, 2010 #3
    I thought the first one was b and c and the second was a and , really need to figure it out though
     
  5. Jan 27, 2010 #4
    C is correct for the first one, i'm not too sure about B though.

    As for the second one, what's your reasoning behind this? Is the air density really increasing as it gets windier outside?
     
  6. Jan 27, 2010 #5
    listen mg0shtisha, thanks so much for your help and i know youre trying to guide me in the right direction, but i need your straightest answer on which you think are correct, i have been awake for 30 hours straight and really need your help
     
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