548 kg 125 kg
63.5 kg
0.385 m
2. Compare the gravitational force of the first ball acting on the last ball, and the gravitational force
of the last ball acting on the first ball. Explain your reasoning.

a = executive branch; b = judicial branch

it provides an alternative energy pathway for the reaction to proceed.

a catalyst is a substance that speeds up the rate of a chemical reaction but is not consumed during the course of the reaction.

catalysts increase the rate of reaction without being used up. they do this by lowering the activation energy needed. with a catalyst, more collisions result in a reaction, so the rate of reaction increases. different reactions need different catalysts.

a catalyst works by providing an alternative reaction pathway to the reaction product. the rate of the reaction is increased as this alternative route has a lower activation energy than the reaction route not mediated by the catalyst.