The man is walking with speed v1 = 1.26 m/s to the right when he trips over a small floor discontinuity. Estimate his angular velocity just after the impact. His mass is 85 kg with center-of-mass height h = 0.79 m, and his mass moment of inertia about the ankle joint O is 63 kg·m2, where all are properties of the portion of his body above O; i. e., both the mass and moment of inertia do not include the foot. The angular velocity is positive if counterclockwise, negative if clockwise.

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Answertraveling around a circular trackexplanation"traveling around a circular track" is the best answer as you could be traveling around a circular track at a constant speed. your velocity would therefore have the same magnitude but will always be constantly direction. since acceleration is the rate of change of velocity, the rate of change will only involve the direction of velocity and not the magnitude.wrong choices: "an object at rest" does not accelerate at all"increasing speed while traveling around a curve" means that the acceleration will not be constant due to only change in direction; it will be constant due to both magnitude and direction"an object in free fall" does not necessarily change direction