A coach at a track meet measured the time of a runner every 10 meters (m) during a 100 m dash the data for the runner are shown which statement is the best analysis of the data for the runner

This is the substance(s) formed in a chemical reaction.

Select all the correct answers. which changes will increase the rate of reaction during combustion? decreasing the area of contact between the reactants adding more oxygen to the reaction removing heat from the reaction changing the reactants from solid form to powdered form lowering the exposure of the reactants to air

Coal contains energy. a. light b. kinetic c. chemical d. mechanical