7. A metal sphere of mass 12 kg has the same diameter as another sphere of mass 4 kg. Both spheres are dropped simultaneously from a tower. When they are 8 m above the ground, they have the same ____. (Neglect air resistance.)
(A) Kinetic energy
(B) Potential energy
(C) Momentum
(D) Acceleration
Dear Student, The iron sphere and the aluminium sphere have different masses. Yet both will fall under the acceleration due to gravity g=9.8m/s^2 . ..... In a free fall, the acceleration does not depend on the mass of the object. .... Hence, Option (D) is correct. .... Hope it helps. Regards.