Recent content by jamal.kun

  1. J

    The power delivered by gravity?

    Homework Statement Consider a projectile fired vertically with an initial velocity vi. This can be thought of as the gravitational force doing work Wg = Fg∆y on the projectile as it travels through some vertical displacement ∆y. Which of the following statements is true?Question options: a)...
  2. J

    What are the x- and y-components of the velocity vector?

    Thanks berkeman, I see what you mean now. I didn't expect something like that. Thank you for the incredibly quick reply.
  3. J

    What are the x- and y-components of the velocity vector?

    Homework Statement Question is: What are the x- and y-components of the velocity vector shown in the figure? https://session.masteringphysics.com/problemAsset/1384003/6/knight_Figure_03_22.jpg The Attempt at a Solution I tried -100 m/s*cos(30 degrees)=-86.6m/s for the x component and...