Is it possible to have length and velocity both as fundamental quantities? Why?

Is it possible to have negative value in speed and displacement?

Is it possible to have a polyhedron with any given number of faces?

Why terminals velocity so named?

Distinguish between average velocity and average speed. Is it possible that the average velocity of a body is zero, but its average speed is non-zero?

is it possible to open a pen cap with one finger? Why?

Is it possible to have a regular polygon with measure of each exterior angle as 22^@ ?

Why is it not possible to see an atom with naked eyes?

Is it possible that the velocity of a particle is zero though it has still an acceleration ?

What are the possible angles of projection with the same velocity to have same range?