When the first ball in a Newton's cradle is pulled back and released, it causes the final ball to move. What does this example of mechanical energy show? A. Mechanical energy is energy in motion
B. Mechanical energy travels in waves
C. Mechanical energy is stored energy

When the ionic compound nabr dissolves in water, br– ions are pulled into solution by the attraction between what two particles? a. the na+ and br– ions b. the na+ ion and the negative end of a water molecule c. the br– ion and the positive end of a water molecule d. the br– ion and the negative end of a water molecule