When you throw a ball, the work you do to accelerate it equals the kinetic energy the ball gains. if you do twice as much work when throwing the ball, does it go twice as fast? explain?

It doesn't because when u threw it the first time, u notice that the ball eventually came to a stop because of the force that was acting upon it. Although when u throw it harder it will start out faster than the first time u threw it because u put more kinetic energy onto the ball. But the same thing happens with this ball that happened to the second ball, they both have a type of force acting upon them.