Aroller coaster track is 3,000 meters long. it takes 100 seconds to travel once around the roller coaster. what is the average speedof the roller coaster? is the velocity constant throughout the trip explain.

Clyde and marilyn are riding a roller coaster. during which section(s) of the track is their potential energy converted to kinetic energy? a. from point b to point c only b. from point b to point d only c. from point a to point b only d. from point a to point b and from point c to point d

If 3 moles of a compound use 24 j of energy in a reaction, what is the a hreaction in j/mol?

Which statement about hf is true? it is zero for any compound in its standard state. it is positive when the bonds of the product store more energy than those of the reactants. it is negative when a compound forms from elements in their standard states. it is zero for any element that is in the liquid state.