You can launch a projectile with a fixed initial speed but at any angle above the horizontal,and it feels no air resistance.The time for it to return to the ground does not depend on the angle at which you launch it.

Question

Quizplus · Accepted Answer

The time for a projectile to return to the ground depends on the vertical component of its initial velocity, which is affected by the launch angle.

You Can Launch a Projectile with a Fixed Initial Speed