CBSE Class 11-science Answered
What is the ratio of velocities?
Asked by buttercup | 19 Apr, 2012, 12:46: PM
Expert Answer
e=speed of sepration/speed of approach.
speed by which ball hit the ground= 10?2 m/s=14.2 m/s
As the 20 energy is lost the energy remain is 80.
0.8 m g h=1/2 m v22
v2=12.7 m/s
e=12.7/14.2=0.9
Answered by | 19 Apr, 2012, 03:21: PM
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