Please explain this to me? Do I use any of thekinematics equations? Two balls ar

Question

Please explain this to me? Do I use any of thekinematics equations? Two balls are dropped from rest from the same height. One of the balls is dropped 1.00sec after the other. Whatdistance separates the two balls 2.00 sec after the second ball isdropped? Please explain this to me? Do I use any of thekinematics equations? Two balls are dropped from rest from the same height. One of the balls is dropped 1.00sec after the other. Whatdistance separates the two balls 2.00 sec after the second ball isdropped?

Explanation / Answer

    Initial velocity of first ball, U1 =0     Initial velocity of second ball, U2 =0     time of travel of first ball , t1 = 2+ 1 = 3 s     time of travel of second ball , t2 =2 s     distance travelled by first ball, S1= U1 t1 + ( 1/2 ) g t12= 4.9 * 9 = 44.1 m     distance travelled by second ball, S2= U2 t2 + ( 1/2 ) g t22= 4.9 * 4 = 19.6 m      distance between the two balls, d =S1 - S2 = 44.1 - 19.6 = 24.5 m

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