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Question

4. 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

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Solution

Both spheres will have the same acceleration which will be equal to g or 9.81 m/s2.


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