Two objects with the same mass may not reach the ground at the same time because the shape, size, and density of the objects can affect the air resistance they experience, which can cause them to fall at different speeds.
Two objects with the same mass can have different shapes or surface areas, resulting in differences in air resistance and causing them to experience different amounts of drag forces, which may lead to different times of reaching the ground.
Two objects with the same mass may not reach the ground at the same time when dropped from the same height due to differences in their air resistance or the presence of external factors such as wind.
