Question : Four marbles are dropped from the top of a tower one after the other with an interval of one second. The first one reaches the ground 4 seconds. When the first one reaches the ground the distances between the first and second, the second and third and the third and forth will be respectively
(A) 35, 25 and 15 m
(B) 30, 20 and 10 m
(C) 20, 10 and 5 m
(D) 40, 30 and 20 m
Answer : option (A)
Solution :
