jellyfish sometime squeeze in the size of their bodies. this pushes a stream of water from the back end of their bodies. according to newtons third law of motion, how will this behavior affect the movement of the jellyfish? a. The jellyfish will move forward b. The inertia of the jellyfish will increase. c The jellyfish will move backward d. The jellyfish will stay still
Help help please
2 answers
The jellyfish, which I suspect is actually a squid (I gather your teacher is not a fisherman), moves forward as the water moves aft. I suppose you could say that this is due to the third law (action---> equal magnitude opposite direction reaction). However I consider this a first law problem. There is no EXTERNAL force on the squid/water system. Therefore the momentum of the system does not change. If part of it moves aft, the other part must move forward to keep the total momentum constant.
The answer to the quiz is
C
D
C
A
D
B
C
A
I promise this is correct!
C
D
C
A
D
B
C
A
I promise this is correct!
2 answers