A lead ball and a snow ball of identical radius are released from a certain height in vaccum. The time taken by both of them to reach the ground are :

Foundation

Physics Foundation

Vertical Motion

Force and Newtons Law of Motion

Question

A lead ball and a snow ball of identical radius are released from a certain height in vaccum. The time taken by both of them to reach the ground are :

exactly equal

unequal

in the ratio of the density of lead and snow

roughly equal

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x = 0 + $\frac{1}{2}$ a. (2)² = 2a .... (i)

velocity at B,

V_B = 0 + 2.a = 2a

Now distance travelled between B & C in 2 second.

y = V_Bt + $\frac{1}{2}$ a. (2)²

y = 4a + $\frac{1}{2}$ a.(2)² = 6a ..... (ii)

From (ii) & (i)

$\frac{y}{x} = \frac{6 a}{2 a} = 3$ or y = 3x