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Math Help - Equation for speed and velocity problems

  1. #1
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    Question Equation for speed and velocity problems

    Hey again,

    So I'm having a bit of trouble finding the equation of a problem I have.
    I learnt yesterday how to find position, speed, velocity and acceleration of a function, but I don't know how to find the function itself.

    So the question is,
    A driver jumps from a platform diving board that is 32ft above the water with initial velocity at 16ft/sec.

    Then it proceeds to tell you to find speed, velocity, and acceleration.

    But how do I find the function to begin with? My teacher was saying something about if it was in meter then it would be 8.5 or something like that..and it would be a -32...but I'm not sure what she was getting at so can any one please explain?

    Also, the second part of the question ask when does the driver hit the water, how would I go about solving for this? Thanks again
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  2. #2
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    More information please

    Hello ktpinnock
    Quote Originally Posted by ktpinnock View Post
    Hey again,

    So I'm having a bit of trouble finding the equation of a problem I have.
    I learnt yesterday how to find position, speed, velocity and acceleration of a function, but I don't know how to find the function itself.

    So the question is,
    A driver jumps from a platform diving board that is 32ft above the water with initial velocity at 16ft/sec.

    Then it proceeds to tell you to find speed, velocity, and acceleration.

    But how do I find the function to begin with? My teacher was saying something about if it was in meter then it would be 8.5 or something like that..and it would be a -32...but I'm not sure what she was getting at so can any one please explain?

    Also, the second part of the question ask when does the driver hit the water, how would I go about solving for this? Thanks again
    All you've told us is that the diver (not, I think, the driver) has an initial speed of 16\text{ ft/sec}. We need to know the initial direction as well, in order to go any further with the question. So: more information, please.

    The thing about metres and feet is that the acceleration downwards due to gravity is 32\text{ ft/sec}^2, or in metric units, 9.8\text{ m/sec}^2.

    Grandad
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  3. #3
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    Quote Originally Posted by Grandad View Post
    Hello ktpinnockAll you've told us is that the diver (not, I think, the driver) has an initial speed of 16\text{ ft/sec}. We need to know the initial direction as well, in order to go any further with the question. So: more information, please.

    The thing about metres and feet is that the acceleration downwards due to gravity is 32\text{ ft/sec}^2, or in metric units, 9.8\text{ m/sec}^2.

    Grandad
    Well this was problem from our review sheet and that is in fact all the background information that was provided..and she proceeded to ask us questions about speed, velocity and acceleration..
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  4. #4
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    Hello ktpinnock
    ktpinnock;388441]Well this was problem from our review sheet and that is in fact all the background information that was provided..and she proceeded to ask us questions about speed, velocity and acceleration..
    Sorry, but you really can't do anything without knowing the direction of the initial velocity.

    Grandad
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