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    Physics for Scientists and Engineers Study Set 4
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    Exam 3: Kinematics in Two or Three Dimensions; Vectors
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    An Object Has a Position Given by = [2
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An Object Has a Position Given by = [2

Question 71

Question 71

Multiple Choice

An object has a position given by An object has a position given by   = [2.0 m + ( 5.00 m/s) t]   + [3.0 m - ( 2.00 m/s<sup>2</sup>) t<sup>2</sup>]   . What is the magnitude of the acceleration of the object at time t = 2.00 s? A) 1.00 m/s<sup>2 </sup> B) 0.00 m/s<sup>2 </sup> C) 0.722 m/s<sup>2 </sup> D) 4.00 m/s<sup>2 </sup> E) 2.00 m/s<sup>2 </sup> = [2.0 m + ( 5.00 m/s) t] An object has a position given by   = [2.0 m + ( 5.00 m/s) t]   + [3.0 m - ( 2.00 m/s<sup>2</sup>) t<sup>2</sup>]   . What is the magnitude of the acceleration of the object at time t = 2.00 s? A) 1.00 m/s<sup>2 </sup> B) 0.00 m/s<sup>2 </sup> C) 0.722 m/s<sup>2 </sup> D) 4.00 m/s<sup>2 </sup> E) 2.00 m/s<sup>2 </sup> + [3.0 m - ( 2.00 m/s2) t2] An object has a position given by   = [2.0 m + ( 5.00 m/s) t]   + [3.0 m - ( 2.00 m/s<sup>2</sup>) t<sup>2</sup>]   . What is the magnitude of the acceleration of the object at time t = 2.00 s? A) 1.00 m/s<sup>2 </sup> B) 0.00 m/s<sup>2 </sup> C) 0.722 m/s<sup>2 </sup> D) 4.00 m/s<sup>2 </sup> E) 2.00 m/s<sup>2 </sup> . What is the magnitude of the acceleration of the object at time t = 2.00 s?


A) 1.00 m/s2
B) 0.00 m/s2
C) 0.722 m/s2
D) 4.00 m/s2
E) 2.00 m/s2

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