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    urvee's Avatar
    urvee Posts: 8, Reputation: 1
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    #1

    Sep 21, 2011, 06:10 PM
    Projectile Motion
    After a golf ball is hit it takes off with an initial speed of 19.0 m/s and at an angle of 33.5 with respect to the horizontal. The golf field is flat and horizontal.
    Neglecting air resistance how far will the golf ball fly?
    How high will the golf ball rise?
    How much time will the ball spend in the air?
    How far would the ball fly if the initial speed was doubled?
    How much time would the ball spend in the air in this second case?
    Unknown008's Avatar
    Unknown008 Posts: 8,076, Reputation: 723
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    #2

    Sep 22, 2011, 05:59 AM
    1. Find the time taken for the ball to go up then down using the vertical component of the velocity and
    v = u + at.
    Find the horizontal component of the velocity and then use s = ut.

    2. Use v^2 = u^2 + 2as to get s.

    3. Use your answer to 1.

    4. Double the initial speed, get a new vertical component and a new horizontal component. Then work out the same thing as in 1.

    5. Use the workings you have in 4.
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