Answer:
c
Explanation:
Since he shells of scallops make them denser than water, they normally rest on the ocean floor, which means there is a force needed to overcome the gravitational pull, which pullls them towards the ocean flootr. To hover in the water they must use their yet propulsion to push upwards ( otherwise they sink to the floor again).
To be able to create an upward force, the yet propulsion needs to eject water downwards. Every action has the same and opposite reaction (Third law of Newton).
The ball needs to accelerate with a magnitude <em>a</em> (pointed towards the center of the circle) of
<em>a</em> = (5.0 m/s)² / (2.0 m) = 12.5 m/s²
Then the required tension <em>F</em> in the string would need to be
<em>F</em> = (2 kg) (12.5 m/s²) = 25 N
39.2 m/s is the launch velocity.
This will make the velocity zero after 4 seconds, and then 32.9m/s after 8 seconds as it lands back down.
Answer:
yes
Explanation:
Because they have logic duh!!! ;D
Do i have to answer the question and still have the offer on the table