PHYSICS · Single correct · CBSE · Physics · Force and Laws of Motion · Force and Laws of Motion
Problem
A metro train is at rest at a platform. Observe the following events inside one of its coaches:
P: As the train accelerates forward, a hanging bag swings backward.
Q: While the train moves at constant speed, the bag hangs vertically.
R: When the train brakes suddenly, the bag swings forward.
Which option correctly matches the type of inertia displayed in events P and R?
(a) P – inertia of motion, R – inertia of rest
(b) P – inertia of motion, R – inertia of direction
(c) P – inertia of rest, R – inertia of motion
(d) P – inertia of rest, R – inertia of direction