A flatbed railroad car of mass moves east at relative to the ground
PHYSICS · Single correct · CBSE · Physics · System of Particles and Rotational Motion · System of Particles and Rotational Motion
Problem
A flatbed railroad car of mass 2.0×103kg moves east at 5m/s relative to the ground. A 80kg worker on the car jogs west at 3m/s relative to the car.
Rank the magnitudes of the linear momentum relative to the ground of the following: (I) the worker alone, (II) the railroad car alone, and (III) the combined worker–car system.
(a) II > I > III
(b) III > II > I
(c) I > II > III
(d) II > III > I