A 0.3-kg ball has a velocity of 30 m/s.
(b) How much work would be required to stop the ball?
I thought this would be the same as the kinetic energy of the ball but it is not.

Question

A 0.3-kg ball has a velocity of 30 m/s.
(b) How much work would be required to stop the ball? 
I thought this would be the same as the kinetic energy of the ball but it is not.

snowsurf · Answer

Is there any other pieces of information like friction. Because if friction is acting will do part of that work to slow the ball down.

anonymous · Answer

That was all the information I was given. The first part of the question asked me to determine the kinetic energy and I got that correct with an answer of 135 J

snowsurf · Answer

My logic would be it would require 135 J of work to stop the ball.  So the ball would need to lose 135 J of kinetic energy for the ball to stop.

anonymous · Answer

You're right!! Thank you!