AP Calculus BCeasymcq1 pt
A particle's speed for r(t) = ⟨x(t), y(t)⟩ is
A.√((x′)² + (y′)²)
B.x′ + y′
C.(x′)² + (y′)²
D.x′y′
Explanation
Core Concept
Speed is the magnitude of velocity.
Correct Answer
A√((x′)² + (y′)²)
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