An iron sphere of mass 30 , kg has the same d | vedclass

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(C) When objects are dropped from a height,they undergo free fall under the influence of gravity.In the absence of air resistance,the acceleration of

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acceleration

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(C) When objects are dropped from a height,they undergo free fall under the influence of gravity.In the absence of air resistance,the acceleration of an object in free fall is equal to the acceleration due to gravity $(g)$,which is approximately $9.8 \, m/s^2$.This acceleration is independent of the mass,size,or material of the object.Since both spheres are dropped simultaneously from the same height,at any given point (including $10 \, m$ above the ground),they will have the same velocity and the same acceleration $(g)$.Potential energy $(PE = mgh)$ depends on mass,so it will be different for the two spheres.Momentum $(p = mv)$ depends on mass,so it will be different.Kinetic energy $(KE = 1/2 mv^2)$ depends on mass,so it will be different.Therefore,the only quantity that remains the same for both spheres is their acceleration.

An iron sphere of mass $30 \, kg$ has the same diameter as an aluminium sphere whose mass is $10.5 \, kg$. The spheres are dropped simultaneously from a cliff. When they are $10 \, m$ from the ground,they have the same:

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