Physics kinematic work

Plss anybody know how to do this? ? i need the answers from a through d

True or false: the cycle of seasons on the earth is caused by the tilt of the earth on its axis toward and away from the sun.

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.