In a vacuum (no air): -Both boxes fall at the same rate and hit the ground at the same time. -Gravity accelerates all objects equally at 9.8 m/s², regardless of mass. In real-world conditions (with air): -Air resistance affects lighter or less compact objects more. -A box full of feathers may fall more slowly if it’s larger or less aerodynamic. -A box full of bricks is denser and experiences less drag → more likely to hit the ground first. If both boxes are the same shape and size: -Air resistance affects them similarly. -They will fall at nearly the same rate and land around the same time.