A) momentum
B) kinetic energy
C) potential energy
D) acceleration
Correct Answer: D
Solution :
When the two spheres are allowed to fall through same height, they acquire same velocity, which is given by\[\sqrt{2gh}\]. Now let us discuss each option one by one: [a] Momentum: Though velocity of both the spheres is same but their momentums will be different because their masses are different. [b] Kinetic Energy: Kinetic Energies will also be different due to difference in masses. [c] Potential Energy: Potential energies will also be different due to difference in masses, though they have fallen through same height. [d] Acceleration: Acceleration on both of them is equal to acceleration due to gravity, thus they have same acceleration. Thus, we observe that acceleration in gravitational field is independent of mass.
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