Offering a reward for a completed task that was previously driven out of enjoyment may reduce one's
a intrinsic motivation
b. inspirational drive
c. extrinsic motivation
d. achievement need

Jet streams are relatively narrow bands of strong wind in the upper levels of the atmosphere. the winds blow from west to east in jet streams but the flow often shifts to the north and south. jet streams follow the boundaries between hot and cold air. the earth's rotation is responsible for the jet stream as well.

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.

I’m not sure about this question