Question

(d) We can easily move our hand in air, but to do the same through a solid block of wood, we need a karate expert.​

Answer 1

Answer:

Explanation:

The karate player is able to break solid block of wood because he strikes the solid block of wood with his hand very,very fast, producing an extremely large momentum

Answer 2

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d) Molecules in gases are loosely packed as compared to solid molecules which are densely packed.

Hence we are easily able to break the force of attraction when we move our hand through air but find it difficult to break through a solid (because of greater forces of attraction between molecules) which a karate expert is able to smash with the application of a lot of force.

Thanks !!