Explain where the electron comes from and how it gains energy during the light reactions.

The electron comes from the chlorophyll molecules when it is excited by energy from sun light during the light dependent reaction.The energy from the light is now trapped in the kinetic chemical energy of the electron as it moves down the electron transport chain.

The objects do not reach terminal velocity         there is not enough time from the time the object falls from when it hits the ground to achieve terminal velocity. an object must be placed higher to achieve terminal velocity in order to be in free fall.