Pertaining to projectile motion, will an object thrown at a specific initial angle possess the same time in the air, range, and max height, as a different object that possesses the same initial angle?

Answer 1

If there is no air resistance, the time in the air, the range, and the maximum height depend only on the initial launch velocity, the angle of launch, and the local acceleration of gravity. If two objects are launched from the same place at the same launch angle and speed, the time in the air, range, and the maximum height will be the same for both because they both move under the same constant acceleration of gravity.

Answer 2

Yes, assuming both objects are in a vacuum

The formulas used to calculate projectiles are below, with x and y components for each variable

d = v_i•t + 0.5*a*t²

v_f = v_i + a•t

v_f² = v_i² + 2*a•d

where	d = displacement	a = acceleration	t = time
	vf = final velocity	vi = initial velocity

The formulas are independent of weight and size of the object. Assuming the variables for both objects are the same, then both objects would travel the same distance. Of course, this is in a vacuum, ie, no friction, wind, outside variables