Use the mouse to move the wood block in and out of the water and watch what happens to the liquid level (boxed in yellow in the picture) and how the buoyant force changes (pink arrow that appears on the box when it is in the water). when moving the wood block deeper into the water the water level increased. what happened to the buoyant force?

it takes about 30 days for it to break down

in physics zero. in muscle fatigue could be high

when two balls of the different masses are dropped from equal height, they reach the ground at the same time .this is because they experience the same acceleration.

the acceleration is independent of mass.

thus when they are dropped they will always maintain the same velocity and travel the same distance (neglect air resistance of course) at the same time.