This question is written wrong, I think u meant 20 kg?
I can help you do them for yourself :)
A type of material that tries to prevent the flow of thermal energy is called an insulator.
Inertia is defined as the property of matter by which causes it to resist changes in its state of motion such as changes in velocity. From the given options above, the option that has the greatest inertia would be option B. A jet airliner.
