Published by:
CGP EDU Academic Team
Published on: August 23, 2026
A boy is rolling a 
ball on the frictionless floor with the speed of 
. The ball gets deflected by an obstacle on the way. After deflection it moves with 
of its initial kinetic energy. What is the speed of the ball now?
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
B
Given, 
and 
Initial kinetic energy 
After deflection it moves with 
of 
Now, let the final speed be ' 
' 
, then:
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