Starting at Time T = 0, an Object Moves Along

question 53

Multiple Choice

Starting at time t = 0, an object moves along a straight line.Its coordinate in meters is given by x(t) = 75t - 1.0t³, where t is in seconds.When it momentarily stops its acceleration is:

• A)0 m/s²
• B)-73 m/s²
• C)-30 m/s²
• D)-9.8 m/s²
• E)9.2 x 10³ m/s²

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