1.

A particle is falling freely under gravity. In firstt second it covers S, and the next t second it coversS,, then t is given by :-S, - SS, +S(4) PigsS2S,(3)

Answer»

Given x the time interval is t,

let thr initial velocity be 0so, the equation of free fall is. s1 = (1/2)*gt² ..... (1)and velocity gained is V = gt

now for 2nd t interval the equation is

s2 = (gt)*t + (1/2)gt² so S2 = (3/2)gt² ............ (2)

now S2 -S1 = gt²(3/2 -1/2) = gt².

so, from here , we get t = √(S2-S1)/g

option 1.



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