The diagram shows the variation of a quantity y with a quantity x for objects in a uniform gravitational field.
What could x and y represent?
ANSWER: B
The Physics Behind answer:
- A direct square proportionality relationship i.e. y ∝ x resembles a parabolic curve.
- This is the kind of curve in the diagram.
- The quantities in options A, C, and D are all having direct proportionality relationships.
- Only in B that a direct square proportionality is involved, that is,
kinetic energy ∝ square of speed.
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