Distance travelled by a ball dropped from a cliff in the 10th second.

Answer 1

v = g t = 9.81 t

at t = 9, v = 9.81 * 9
at t = 10, v = 9.81 * 10

average speed during tenth second 4.9 (19)
distance during tenth
= 4.9 * 19 * 1

Answer 2

a ball is dropped from calif. find its distance covered in 6th second