From a reference frame moving along the surface of the wall at speed v, the initial speed of the ball is A) $

Question

From a reference frame moving along the surface of the wall at speed v, the initial speed of the ball is A) $< \left| \mathrm { V } ^ { \mathrm { T } } - \mathrm { v } \right|$ B) < {v² + V²}^1/2. C) = {v²+ V²}^1/2. D) > {v²+ V²}^1/2.

Quizplus · Accepted Answer

The initial speed of the ball from a moving reference frame can be calculated using vector addition of velocities. The correct formula involves adding the velocity of the ball relative to the wall and the velocity of the moving reference frame (v), then taking the magnitude of this vector sum. This is accurately represented in choice C, where the velocities are added vectorially and the magnitude is taken, indicating the correct calculation for the initial speed of the ball from the moving reference frame.

From a Reference Frame Moving Along the Surface of the Wall