Question

A lead sphere of mass $20kg$ has the same diameter as an aluminium sphere of mass $72kg$. The spheres are simultaneously dropped from a tower. When they are $10m$ from the ground, they have identical (neglect air resistance):

• A. kinetic energy
• B. potential energy
• C. momentum
• D. acceleration

Answer 1

The correct option is D acceleration

Since, the acceleration due to gravity is independent of mass, hence at any time both the spheres will posses same acceleration.
On the other hand, kinetic energy,potential energy & momentum are mass dependent quantities.