Newton's third law : Introductory video

Before watching the video read the questions below. As you watch the video try to answer them

Questions

    • Before wathcing the video try to explain what you understanding the following physics terms to mean conservative vector field, energy, potential and how are potentials and forces related
    • What does Newton's third law state.
    • Can you explain why in the video I insist that action is not the same as force.
    • If the momentum of a system increases by $\Delta p$ what is the corresponding in the change of momentum in the environment?
    • Explain what is meant by the term conservative vector field. How much does the momentum of a particle change by when it moves around a circular path in a conservative vector field.
    • How is the kinetic energy calculated from the momentum. How is this expression derived? Is energy a scalar of a vector quantity making sure that you justify your answer?
    • Explain why we introduce the notion of potential energy rather than considering the kinetic environment of the environment explicitly.
    • How are forces related to potentials?