Post a New Question


posted by .

consider 2 inertial reference frames, A and B, where B (a train) is moving with constant velocity, 10kn/h, in the positive x direction with respect to A.(a person standing on the station platform). if another person is throwing a ball on the train (ie in frame B at a speed of 10m/s in the negative y-direction in the train (ie frame B ), what is the measured velocity of the ball and direction in frame A (ie with respect to the platform xy)?

  • physics -

    The ball has a downward velocity component if 10 m/s in both reference frames. In addition to that, it has a velocity component + 10m/s in the station platform frame (A).

    So, take the vector sum of 10 m/s horizontal and -10 km/h vertical velocity components

  • physics -

    why is it -10 km/h for the vertical velocity components?because i thought the train is travelling horizontally at 10km/h so it should be a horizaontal component?

  • physics -

    <<why is it -10 km/h for the vertical velocity components? >>

    Because the ball is thrown down. The horizontal relative motion of the two reference frames does not affect vertical velocity componnts when the transformation is performed.

Answer This Question

First Name
School Subject
Your Answer

Related Questions

More Related Questions

Post a New Question