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Starting at Time T = 0, an Object Moves Along

Question 78

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
B) -73 m/s2
C) -30 m/s2
D) -9.8 m/s2
E) 9.2* 103 m/s2

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