Which statement is true if the mc001-1.jpghrxn of a reaction is positive? the reaction is endothermic. the reaction is exothermic. there is more reactant than product. there is more product than reactant.

The famous scientist galileo galilei did several experiments with sloping planes, which he rolled metal balls down so that he could study motion. by changing the slope, he could study how the speed at which the ball rolled was affected. what was the independent variable in galileo's experiment? a. the speed of the ball b. the slope of the plane c. whether the ball moved d. what the ball was made of