The Position of an Object Is Given by X =

question 48

Multiple Choice

The position of an object is given by x = at³ - bt² + ct,where a = 4.1 m/s³,b = 2.2 m/s²,c = 1.7 m/s,and x and t are in SI units.What is the instantaneous acceleration of the object when t = 0.7 s?

• A) -13 m/s²
• B) 2.9 m/s²
• C) 4.6 m/s²
• D) 13 m/s²

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