A stone is dropped from the bridge, it takes 4s to reach the water. what's the height of the bridge?

Matt is driving down 7th street. he drives 150 meters in 18 sec. assuming he doesn’t slow down or speed up, what is his speed?

In a given chemical reaction, the energy of the products is greater than the energy of the reactants. which statement is true for this 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