In an idealized scenario, if you were to throw a rock into the ocean, directly over the Mariana Trench, and ignore factors like currents and water movement, the rock would continue to sink until it reaches the seafloor of the trench. The Mariana Trench is the deepest part of the world's oceans, and it contains the Challenger Deep, which is the deepest point on Earth.
The Challenger Deep, located within the Mariana Trench, reaches a maximum depth of approximately 36,070 feet (10,994 meters), or about 6.83 miles (11 kilometers) deep. At this depth, the water pressure is immense, and the conditions are extreme, with total darkness and low temperatures.
Rocks or objects sinking into the ocean are subject to the force of gravity, and unless they are positively buoyant, they will continue to descend until they reach a point where their density is equal to that of the surrounding water, at which point they will become neutrally buoyant. In the case of the Mariana Trench, this point is the seafloor at the bottom of the trench.
It's important to note that in reality, various factors can influence the descent of an object, such as water currents and the object's shape, size, and buoyancy. These factors can cause an object to deviate from a perfectly straight downward path. Additionally, the immense pressure and extreme conditions in the trench can affect the behaviour and integrity of objects sinking into it.
Overall, while an object like a rock would eventually reach the seafloor of the Mariana Trench if no other forces were at play, real-world conditions make the descent more complex, and objects may not follow a perfectly straight path to the trench's bottom.
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