NCERT Exercise 3.5 - Motion in a Plane
Question: Read each statement below carefully and state with reasons, if it is true or false for an arbitrary motion: (a) |A + B| = |A| + |B| (b) |A + B| ? ||A| ? |B|| (c) |A ? B| = |A| ? |B| (d) |A ? B| ? ||A| ? |B|| (e) |A + B| = |A ? B| (f) |A × B| = |A| |B| (g) speed is always positive (h) velocity is always positive.
Answer: (a) T, (b) T, (c) F, (d) F, (e) F, (f) F, (g) T, (h) F.
Full step-by-step NCERT solution with diagrams on Something by Zero.