A ball is dropped in a vacuum (no air resistance). As it falls it loses 7 J of potential energy. How much kinetic energy did it gain

Need in all of themmm only answer if you know plsssss

Complete the statement about memory improvement. ( )involves organizing and breaking down information into easier groups to expand capacity. rehearsal is the verbal repetition of information. these techniques are especially important for the improvement of ( ) memory.

Which articulations allow for greatest range of motion?