anonymous
  • anonymous
3- A ball was launched with V=30m/s and 45 degrees to horizon from the ground. It bounces at point A on the ground and losses its vertical speed vi=rt(3)vf. The ball flies off and bounces off point B. a) What is the distance from point A to point B? b) To maximize the distance from A to B, what should be the initial angle? c) What is the ratio of the displacement from origin to point A and from A to B? d) How far the ball traveled from origin to point A and from A to B?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
found (b) to be 60 degrees
nowhereman
  • nowhereman
What is meant by 'losses its vertical speed'. If it has no more vertical speed it should just slide along the ground...
anonymous
  • anonymous
the loss is only the rt3

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nowhereman
  • nowhereman
What is that vi=rt(3)vf supposed to mean anyway?
anonymous
  • anonymous
vi is the initial velocity and vf is the final velocity
nowhereman
  • nowhereman
and rt(3) is just an arbitrary fraction of 1?
anonymous
  • anonymous
yeah, what is rt(3)?
anonymous
  • anonymous
the loss in the vertical velocity after it bounces
anonymous
  • anonymous
okay you know that\[v _{i} = 30. \] you know that it was launched at 45 degrees. find out the horizontal and vertical components of Vi
anonymous
  • anonymous
velocity vector <15sqrt(2), 15sqrt2 - 10t> position vector < t15sqrt(2), t15sqrt(2) - 5t^2>
anonymous
  • anonymous
what is the 15sqrt2 - 10t in the velocity vector supposed to mean?
anonymous
  • anonymous
are you approximating g to 10?

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