What is the ratio of velocities?

Asked by buttercup | 19th 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  | 19th Apr, 2012, 03:21: PM

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