If the Displacement of an Object Is Given in SI

question 40

Multiple Choice

If the displacement of an object is given in SI units by Dx = -3 t + 4 t ²,at t = 2 s its velocity and acceleration are,respectively:

• A)positive,positive.
• B)positive,negative.
• C)negative,negative.
• D)negative,positive.

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Definitions:

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