Question

reason why we can easily move one hand in air but not through and solid material​

Answer 1

becz air contain free molecule wgich can move but in solid it is opposite

Answer 2

We can move our hand freely in air but not through solid block of wood as the molecules of air have least force of attraction hencce the molecules move freely but in solids the molecules are tightly packed with high force of attraction.

Hope it may help you !!!!!