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CBSE Class 9 Answered

A BALL OF MASS 0.1KG IS THROWN AGINST A WALL IT STRIKES THE WALL NIRMALLY WITH A VELOCITY OF 30M/S AND REBOUNDS WITH A VELOCITY 20M/S. CALCULATE THE CHANGE IN MOMENTUM OF THE BALL
Asked by | 28 Jul, 2012, 11:38: AM
Expert Answer
Initial momentum, p1 = 0.1(-30)   (assuming that ongoing ball has velocity in negative direction)
final momentum, p2 = 0.1(20)
change in momentum  = p2-p1  = 0.1(20+30)= 5kgm/s
Answered by | 28 Jul, 2012, 02:37: PM
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