What is the velocity of the object at t=1 second? A 1.5m/s B. 1.0m/s C. 2.0m/s D. 3.0m/s 3. During which of the following time intervals is the object traveling at a constant,positive velocity? A. 46s B. 0-2s 23s D 3-4 s

To determine the velocity of the object at $t=1$ second, we need to analyze the given information.<br /><br />From the graph, we can see that the velocity of the object is constant at $1.0m/s$ from $0s$ to $2s$. Therefore, the velocity of the object at $t=1$ second is $1.0m/s$.<br /><br />So, the correct answer is B. $1.0m/s$.<br /><br />To determine the time interval during which the object is traveling at a constant, positive velocity, we need to analyze the given information.<br /><br />From the graph, we can see that the object is traveling at a constant, positive velocity from $0s$ to $2s$. Therefore, the time interval during which the object is traveling at a constant, positive velocity is $0-2s$.<br /><br />So, the correct answer is B. $0-2s$.