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    ineken's Avatar
    ineken Posts: 4, Reputation: 1
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    #1

    Oct 4, 2011, 01:00 PM
    A car is slowing down with a parachute how do I finish this problem?
    The parachute on a race car of weight 8840 N opens at the end of a quarter-mile run when the car is traveling at 35 m/s. What total retarding force must be supplied by the parachute to stop the car in a distance of 1100 m?
    Unknown008's Avatar
    Unknown008 Posts: 8,076, Reputation: 723
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    #2

    Oct 5, 2011, 02:40 AM
    Use the equation:

    v is the final velocity of the car, here 0
    u is the initial velocity of the car, here 35
    a is the acceleration you're looking for and should be negative,
    s is the displacement of the car, here 1100.

    Solve for a :)

    Can you post what you get?
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