Let the Position Function of a Particle Be $\mathbf { r } ( t ) = \left\langle t ^ { 2 } , 1 - 2 t , t \right\rangle$

question 102

Multiple Choice

Let the position function of a particle be $\mathbf { r } ( t ) = \left\langle t ^ { 2 } , 1 - 2 t , t \right\rangle$ . Find the smallest value of its speed.

• A)0
• B)1
• C) \(\sqrt { 2 }\)
• D) \(\sqrt { 3 }\)
• E)2
• F) \(\sqrt { 5 }\)
• G) \(\sqrt { 6 }\)
• H) \(\sqrt { 7 }\)

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