Asked by Anonymous
A boy throws a ball vertically upwards with a velocity of 10m/s.What is the velocity of the ball when it is half way up?
Answers
Answered by
bobpursley
Half of its original kinetic energy is gone
final KE=1/2 orig KE
1/2 m v'^2=1/4 m vi^2
v'= vi = sqrt(1/2)=.707 vi
final KE=1/2 orig KE
1/2 m v'^2=1/4 m vi^2
v'= vi = sqrt(1/2)=.707 vi
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