An explosion in an engine causes a fragment with mass 0.150 kg to fly straight upward with initial speed 28.0 m/s .

1)Calculate the work done by gravity on the engine fragment when it gets to a height 30.0m above the engine.

2)What is the speed of the fragment when it is 30.0 m above the engine?

3)Does the answer to part B depend on whether the baseball is moving upward or downward at a height of 30.0 m ? Yes or No