The Velocity of an Object as a Function of Time

question 17

Multiple Choice

The velocity of an object as a function of time is given by v = (12.5t − 7.2t²) + (4.3t³) .What is its acceleration as a function of time?

• A)a = (12.5 − 14.4t)+ (12.9t²)
• B)a = (−7.2)+ (4.3t)
• C)a = (5.3t)+ (12.9t²)
• D)a = (−7.2)+ (8.6t)
• E)a = (−14.4t)+ (4.3t²)

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