Achild tosses a ball straight up into the air. when is the ball's potential energy the greatest? a. when it reaches the top of its flight b. when it first leaves the child's hand c. when it approaches the top of its flight d. when it begins to fall back to the child's hand

helicase, i think thats it

igneous rocks which formed by the crystallization of magma at the surface of the earth called extrusive rocks. they are characterized by fine-grained textures because the rapid cooling at or near the surface did not provide enough time for large crystals to grow.