another projectile motion qn!! thx!!!?

Question

R2. Does a large maximum altitude mean that the projectile is in the air a long time?
Explain why or why not. If possible, give an example of a situation in which the
maximum height is large, but the projectile does not spend very much time in the air.

Answer 1

large altitude doesn't nesaserily mean that the projectile will spen more time in the air.
if something is thrown off of a cliff, there is a high altitude but the projectile will just go down.
if you were at the bottom of the same cliff and threw something up with enough force so that the max hieght is the same as the cliff, this projectile will spend double the time in the air as the first projectile.

Answer 2

if t=1/2 the total time of flight
here i am talking of the general projectile motion from ground back to the ground
if you look carefully and manipulate some formulas you will find
t=sqrt(2*h/g) [ h is the maximum altitude ]
thus more maximum height more is the time of flight

Answer 3

It depends, if the projectile never bounces back then it is true. If it does then time and height are not related.