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Per NCERT §5.11.3 (2D collisions), how many conservation equations does linear momentum yield in 3D?
AZero (no conservation)
BOne equation per body
CThree (one per axis)
DTwo equations of motion
Answer & Solution
Correct answer: C. Three (one per axis)
NCERT §5.11.3: p is a vector; conservation gives 3 component equations (Δp_x = Δp_y = Δp_z = 0).
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