Question

if someone jumps to shore from a boat ,the boat moves in opposite direction explain.

Answer 1

when someone jumps from a boat to the shore, he applies action force on the boat due to which it moves in the opposite direction while the boat applies reaction force on the person.

Answer 2

Hola

Here is your answer

When you jump in water from a boat,it apparently moved in a opposite direction due to third law of motion which states that every action has an equal opposite reaction.

When a man jumps from the boat it exerts a force on boat (action) and then the boat too exerts an opposite force (reaction) and it movies in opposite direction.

Hope it helps