15. Rowing a boat and a rocket taking off into space are examples of which law of motion? *

A law of gravitational force***
B law of inertia
C Newton's 2nd law of Motion
D Newton's 3rd law of motion

I think you're correct

A is makes the most sense

B law of inertia

The correct answer is D) Newton's 3rd law of motion.

Rowing a boat and a rocket taking off into space are both examples of Newton's 3rd law of motion, which states that for every action, there is an equal and opposite reaction. In the case of rowing a boat, when you push against the water with the oars, the water pushes back on the boat with an equal force, propelling the boat forward. Similarly, when a rocket engine exerts a force on the exhaust gases, the gases exert an equal and opposite force on the rocket, causing it to move in the opposite direction.

To determine the correct answer to this question, the first step is to understand the concepts and principles behind each option. In this case, the law of gravitational force (option A) does not apply to rowing a boat or rocket propulsion. The law of inertia (option B) is Newton's 1st law of motion, which states that an object at rest will stay at rest, and an object in motion will stay in motion, with the same speed and direction, unless acted upon by an external force. This law does not directly explain the examples given in the question.

To evaluate options C and D, we need to know the differences between Newton's 2nd and 3rd laws of motion. Newton's 2nd law (option C) states that the acceleration of an object is directly proportional to the net force exerted on it and inversely proportional to its mass. This law does not specifically describe the interaction of forces in the examples given.

By process of elimination and understanding the principles behind each option, we find that Newton's 3rd law of motion (option D) is the correct answer for the question.