As a raindrop falls from a cloud to the surface of Earth,
A.its speed increases due to gravity.
B.its speed increases due to air resistance.
C.it moves at a constant speed.
D.it moves at a constant velocity.
I think its B... Am i right?
2 answers
Disagree, air resistance would reduce speed.
It's speed increases due to gravity but it's speed decreases due to air resistance. At some point the two cancel each other and the raindrop reaches its terminal velocity and it neither increases nor decreases its speed after that. You can read on the net about "small" raindrops that fall faster than their terminal velocity and scientists so far don't understand why that happens.