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    Cackie's Avatar
    Cackie Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Sep 3, 2007, 02:46 PM
    Physics [application]
    I kind of need help with this physics problem I have, I kind of frogot how to do it since its been a while, the word problem is

    A worker drops a hammer 10meters above the ground. If the hammer's height in meters above the ground is modeled by h(t) = -4.9t^2 + 10 , where t represents time in seconds after the hammer is dropped, about how long will it take the hammer to reach the ground?

    ^2 <- it means squared
    galactus's Avatar
    galactus Posts: 2,271, Reputation: 282
    Ultra Member
    		  
    #2

    Sep 3, 2007, 04:06 PM
    Set your quadratic equal to 0 and solve for t.
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