Question

why does a block of plastic released under water come up to the surface of water​

Answer 1

Density of plastic is less than the density of water. So the block of plastic floats.

Answer 2

hello!

here is your answer

The density of plastic is less than that of water, so the force of buoyancy on plastic block will be greater than the weight of plastic block displaced. Hence, the acceleration of plastic block will be in upward direction, and comes up to the surface of water.

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