Does angular velocity change with radius.

What is the weight of a feather (mass = 0.0001 kg) that floats through earth's and the moon's atmospheres?

Need only answer if you think you know it

During a medieval siege of a castle, the attacking army uses a trebuchet to hurl heavy stones at the castle walls. if the trebuchet launches the stones with a velocity of at an angle of 50.0°, (a) how long does it take the stone to hit the ground? (b) what is the maximum distance that the trebuchet can be from the castle wall to be in range? (c) how high will the stones go? show all your work.