NCERT Exemplar Solutions Class 9 Science Solutions for Work and Energy - Exercise in Chapter 11 - Work and Energy

Question 4 Work and Energy - Exercise

An iron sphere of mass 10 kg has the same diameter as an aluminum 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


(a) acceleration


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 hence acceleration is the right answer.

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