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Homework Help: Cannon Fire

  1. Jan 26, 2009 #1
    Cannon Fire!!!

    Can anyone please help me figre this one out;

    A senior physics class conducting a research project on projectile motion constructs a device that can launch a cricket ball. The launching device is designed so that the ball can be launced at ground level with an initial velocity of 28m/s at an angle of 30 degrees to the horizontal. At what time will the ball reach its maximum height?
  2. jcsd
  3. Jan 26, 2009 #2


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    Homework Helper

    Re: Cannon Fire!!!

    Figure the vertical velocity component from the angle.

    Divide by the magnitude of gravity that is acting to slow it down.

    That's your time.
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