An object has an acceleration of +5.0 m/s^2. What does this mean?

In the derivation of rrkm theory, a factor of 1/2 is introduced when equalizing the rates of formation and decomposition of activated complex as keal-hr) = ko this is clearly against the assumption of transition state theory that states all the activated complex in the transition state iss going to the product. find the reason why this factor is introduced here.

Matter is needed to transfer thermal energy bya. conductionb. convectionc. radiation d. both a & b.

Which of the following are appropriate acceleration units?