Choose the correct answer:
1. An iron sphere of mass \(5\) \(kg\) has the same diameter as an aluminium sphere of mass is \(3.5\) \(kg\).
Both spheres are dropped simultaneously from a tower. When they are above the ground, they have the same.
Both spheres are dropped simultaneously from a tower. When they are above the ground, they have the same.
2. A body is falling from a height h. After it has fallen to a height of h/2, it will have ___________.