An iron sphere of mass 10 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 10 m above the ground, they have the same (a) acceleration (b) momenta (c) potential energy (d) kinetic energy

Answer:

The masses of the iron and aluminium spheres are different. Both will, however, fall under the acceleration due to gravity g=9.8m/s2. The acceleration of an item in free fall is independent of its mass.

  • Momentum, potential energy and kinetic energy varies with weight.
  • But in this case, acceleration is because of acceleration due to gravity which is independent of mass.

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