What goes up but never comes down?

What Does this text mean:

important=important

Imagine you are in a room with no windows or doors. How will you get out?

Solve the equation by replacing the alphabet with numbers.

MOM + MOM + NO = BOOK=

John drives to his office at 20km/hr. After reaching the office, he realizes that today is a holiday. He went back at an average speed of 30km/hr. Discounting the time spent in the stoppage what was the average speed of his journey?

The richest man in the city Mr Rechard is kidnapped. James Bond is appointed to the case. At the crime scene, a note is found written by Mr Richard. The note read:

"First of January, Fourth of October, Fifth of March, Third of June."

James Bond knew that somehow, the killer's name was hidden in the note. The following were the suspects:

Jack Richard, the son and the heir of property.
John Jacobson, the employee of Richard.
June Richard, the wife of Richard.

James Bond took only a few moments to deduce the killer's name. Can you tell who was the killer?

How many times in a given day, minutes and hour clock comes in a straight line ?

If you drop a 15 kg iron bar and a 5 kg bag of cotton from a height of 50 meters which will reach the ground first?

There is a movie name hidden in the picture that is attached with this question. Can you find out which movie is it?

Which is faster, Heat or Cold ? Explain.