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    stlrocker's Avatar
    stlrocker Posts: 1, Reputation: 1
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    #1

    Nov 9, 2008, 04:11 PM
    Physics Kinematics
    A dancer jumps forward with speed of 14 m/s and an angle with the horizontal of 50 degrees.

    1.Calculate the horizontal and vertical components of the triangle.
    2. Use the vertical component only to solve for her hang-time.
    3. What is the dancer's maximum height?
    4. Use the horizontal velocity and the hang-time to so solve for the range (how far) of the dancer's leap.
    Credendovidis's Avatar
    Credendovidis Posts: 1,593, Reputation: 66
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    #2

    Nov 9, 2008, 06:35 PM
    Interesting questions...
    As it is your homework : how far did you get on this, and what do you already have?
    Or do you expect us to do your homework?

    Suggestion : either first study your homework book, or Google "vector".

    :)
    maria vazquez's Avatar
    maria vazquez Posts: 2, Reputation: 1
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    #3

    Sep 29, 2009, 05:04 PM

    Suppose that a speeding car goes by at twice the speed limit of 45 mph. How long will it take for a police car (starting from rest) that experiences a constant horizontal acceleration of 1.5 g's to catch up to the speeder
    1. how far down the road does the intercept happen?
    2. how much time does it take for the intercept to happen?
    3. how fast is the police car going upon intercept?
    4.how fast is the speeder going at the moment of intercept?
    5. what is the color of the police car?
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