45. Speed and Velocity

How can you tell from the velocity data when the walker’s speed was zero? 8. How can you tell from the velocity data which direction the walker was walking? 9. What is the difference between a velocity of 0.5 meters per second (m/s) and a velocity of –0.5 meters per second (m/s)? 10. How are speed and velocity related to each other ... ................
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