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Kinematics and Motion Variables (4A) Practice Test
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Q1
In a treadmill gait study, a subject walks so that a reflective marker on the shoe moves with constant velocity $+1.5\ \text{m/s}$ along a straight track for 4 s. The motion-capture system then reports the marker’s velocity as $+0.5\ \text{m/s}$ for the next 4 s, with the change occurring smoothly over a short interval. Which statement best describes the velocity change during the transition, consistent with kinematics?
In a treadmill gait study, a subject walks so that a reflective marker on the shoe moves with constant velocity $+1.5\ \text{m/s}$ along a straight track for 4 s. The motion-capture system then reports the marker’s velocity as $+0.5\ \text{m/s}$ for the next 4 s, with the change occurring smoothly over a short interval. Which statement best describes the velocity change during the transition, consistent with kinematics?