Consider the situation described below, then choose the best answer to each of the following questions. All questions are in reference to the motion described below.
Suppose that some object is constrained to move on a straight line, as depicted in the sketch below.
And suppose that the motion of the object is described by the shown velocity vs. time graph, where the positive and negative values of the velocity refer to the direction of motion.
At which of the following times, if any, does the object change its direction of motion?
t=5 seconds
t=6 seconds
t=7 seconds
The object only moves in one direction
Consider the situation described below, then choose the best answer to each of the following questions. All questions are in reference to the motion described below. Suppose that some object is constrained to move on a straight line, as depicted in the sketch below
x+
And suppose that the motion of the object is described by the shown velocity vs. time graph where the positive and negative values of the velocity refer to the direction of motion.
1+ [m/s] 25 20 15 10 5 t [s] 0 t0 -10 -20 -25
At which of the following times, if any, does the object change its direction of motion?
t=5 seconds
t=6 seconds
t=7 seconds
The object only moves in one direction