I know, but the conversion isnt perfect, if you only drop one friut and let it bounce it will gain more and more height.
If you drop fruit on another, and first one jumps away, second fruit, that you will drop on that one in the jar wouldn't launch this up like the first one. In one hand, you have less fruits, but on other-less energy to bounce. Launch second fruit away like this is one of my first moves to play longer.