Question

1. define buoyancy ?
2. what is free fall ? ​

Answer 1

Answer:

the force exerted by water on an object when it is partially or fully immersed in water is called buoyancy.

when something falls from a height under the influence of earths gravity then it is called free fall.

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Answer 2

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1. The ability or tendency of something to float in water or other fluid.
2. Downward movement under the force of gravity only.