4. An iron sphere of mass 10 kg has the same diameter as an aluminium
Both spheres will have the same acceleration which will be equal to g or 9.81 m/s2.
An iron sphere of mass 10 kg has the same diameter as an aluminium sphere of mass 3.5 kg. Both the spheres are dropped simultaneously from a tower. When they are 10 m above the ground, they have the same :
(a) acceleration
(b) momentum
(c) potential energy
(d) kinetic energy