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Homework Help: physics

Posted by Anonymous on Sunday, June 10, 2012 at 1:33am.

A body strikes the ground vertically down wards with a velocity u and rebounds with the same speed.Calculate the change in velocity.

• physics - drwls, Sunday, June 10, 2012 at 6:01am

  vinitial = u
  vfinal = -u
  
  vfinal - vinitial = -2 u
  

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