Which statement is true for the hang time of a projectile? it can be calculated solely by knowing the horizontal component of the velocity. it can be calculated solely by knowing the vertical component of the velocity of projection. it can be calculated solely by knowing the resultant velocity of projection. it can be calculated solely by knowing the angle of projection.

It can be calculated solely by knowing the vertical component of the velocity of  projection.

Explanation:

As we know that two components of the velocity of projectile is given as

now the time of flight is the total time in which the total vertical displacement is zero is given as

now we will have

so we can find the time of flight just be finding the vertical component of the velocity so correct answer will be

It can be calculated solely by knowing the vertical component of the velocity of  projection.

second mirror gathers light from a faraway object and reflects it to another mirror. - a.