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Projectile motion (Basketball)

  1. Nov 25, 2016 #1
    1. The problem statement, all variables and given/known data
    A basketball player throws the ball at a 60° angle above the horizontal to a hoop which is located a horizontal distance L = 2.8 m from the point of release and at a height h = 0.4 m above it. What is the required speed if the basketball is to reach the hoop?

    HlInqYZ.gif

    2. Relevant equations
    I used V=V0+at and r(t)=r0+v0t+0.5a2
    and V0 x/y=V0sin(θ)

    3. The attempt at a solution
    My attempt: http://i.imgur.com/0vdqdvl.jpg
    0vdqdvl.jpg
    Got a wrong answer. Would love some guidance. Thanks.
     
    Last edited by a moderator: Nov 25, 2016
  2. jcsd
  3. Nov 25, 2016 #2

    BvU

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    **Third question** You write ##0.4 = ... (5.6 V_0 )^2 ## instead of ##0.4 = ... ({5.6 \over V_0}) ^2 ##

    A quick check on the dimensions of the last term would have shown that it's not length like the other two.

    General advice is to work with symbols and only substitute values at the very last.
     
  4. Nov 26, 2016 #3
    Thank you so much!!! Got the right answer, and definitely will use your advice in the future.
     
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