Kinematics Problem Ball throwing

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alingy1
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Hi,

Could you please look at this problem in the picture and my steps?
(check my answer)

I do not have the solutions to the problem weirdly.
 
Attachments
  • Handwritten kinematics working on paper: a sketch of a ball thrown horizontally at 10 m/s from 2 m height with a dashed arc, then equations for vertical displacement, rebound time 0.4 s, vy = 6.08 m/s, and horizontal distance d = 1.82 s × 10 m/s = 18 m.
    image.jpg
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  • Handwritten kinematics diagram of a boy throwing a ball toward a vertical wall 4 m away, with launch velocity components 10 m/s horizontal and 10 m/s vertical, and the release height marked 2 m above the ground.
    Screen Shot 2014-05-21 at 5.22.34 PM.png
    18.1 KB · Views: 526
Hello, alingy1. Your work looks good to me.

As a check, think of the wall as a mirror and reflect the second part of the trajectory to the other side of the wall. Use this trick to reduce the problem to a more standard projectile problem.
 
TSny, could you be more specific about your technique? It sounds really interesting but I'm not sure how the number crunching goes.
 
See the attached figure. Can you find the horizontal range of the blue trajectory?
 
Attachments
  • Diagram of a projectile launched from a figure at left with velocity components of 10 m/s horizontal and 10 m/s vertical, rising over a wall 4 m away, with a dashed reflected arc and a solid blue trajectory landing at a marked distance labelled ?.
    Projectile 1.png
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