Question

I need the explained answer of question no. 22. Please I need it quickly ,correct and explained. The correct answer is "3.3 m". Please tally your answer before you send the explanation.

Answer 1

Velocity on reaching the surface of water:

v=2g(h1+h2)−−−−−−−−−−√ =2(9.8)(6+3)−−−−−−−−−−√ =13.3 m/s

Retardation offered by the sea water:

a=−Fm =−150055 =−27.3 m/s2

Maximum depth reached:

v2−u2=2as0−(13.3)2=2(−27.3)s s=3.24 m