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    lionel messi's Avatar
    lionel messi Posts: 35, Reputation: 1
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    #1

    Jun 30, 2012, 10:16 AM
    Velocity numerical
    A police jeep is following a car with 120m/s, fired on a car with 80m/s.if the car is moving with 170m/s,how fast will the bullet hit the car?.
    Unknown008's Avatar
    Unknown008 Posts: 8,076, Reputation: 723
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    #2

    Jun 30, 2012, 10:34 AM
    Faster than the speed you will post your attempt it seems.
    lionel messi's Avatar
    lionel messi Posts: 35, Reputation: 1
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    #3

    Jul 1, 2012, 06:14 AM
    What.. :/
    Unknown008's Avatar
    Unknown008 Posts: 8,076, Reputation: 723
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    #4

    Jul 1, 2012, 06:22 AM
    Basically, post your attempt.
    lionel messi's Avatar
    lionel messi Posts: 35, Reputation: 1
    Junior Member
    		  
    #5

    Jul 1, 2012, 09:46 AM
    I don't know its concept.. its just a trick I think..
    total speed of bullet-object speed=final velocity of bullet
    120+180-170=30 m/s.
    please tell me how is it..
    Unknown008's Avatar
    Unknown008 Posts: 8,076, Reputation: 723
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    #6

    Jul 1, 2012, 12:04 PM
    Yes, that's it!

    But I must say that those cars are pretty fast and the bullets must be pretty large.
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