Question

both questions give me very fast solution 9 and 12

Answer 1

12. when a person jumps he/she applies force to yhe ground. similarly, when the person jumps feom a hoat , he force applies on the boat makes it oves backward. If a man jumps out from a boat then the boat moves backwards because of the application of Newton's third law of motion

Answer 2

12. every action experiences an equal and opposite reaction. That is why when a person moves out of boat he exerts a force or action due to which the person experiences a reaction force