What breaks yet never falls, and what falls yet never breaks?

How many cubic feet of dirt are in a hole of one foot deep, three feet long, and two feet wide?

John was piloting a plane behind a car but was never able to overtake it. Why?

If a wheel has 54 spokes, how many spaces are there between the spokes?

Which word does the below Plexor means ?

There are people and strange monkeys on this island, and you can not tell who is who (Edit: until you understand what they said - see below). They speak either only the truth or only lies.
Who are the following two guys?
A: B is a lying monkey. I am human.
B: A is telling the truth.

Take number 1000 and then add 20 to it.
Now add 1000 one more time.
Now add 30.
Now add 1000 one more time.
Now add 40.
Now add 1000 one more time.
Now add 10.

What is the total?

What has 13 hearts but no other organs?

"That Restaurant always remains crowded. This is the reason why nobody goes there".

Can you find a flaw in this statement?

A blonde put eyeliner on her head. Why?