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Grade: 11
        
A SMALL BALL IS THROWN WITH INITIA SPEED U AT AN ANGLE THETA WITH THE HORIZONTAL FROM A SMOOTH HORIZONTAL SURFACE . THE BALL MAKES SEVERAL IMPACTS WITH THE SURFACE . THE COEFFICENT OF RESTITUTION IS E.
  1. THE VELOCITY COMPONET Vy AFTER 1ST IMPACT WILL BE.
13 days ago

Answers : (1)

Vikas TU
6930 Points
							
Initial velocity in x direction = ucosthetha
in y direction = usinthetha
 
Let Vy be the final y direction velocity after collision.
Therfore,
E = Vy/Uy => Vy/(usinthetha)
Vy = E*usin(thetha).
12 days ago
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