If it takes a horse 175 seconds to make 3.00 laps around a horse track (each lap is equal to 1.00 km), what was the horse's average velocity in m/s when he crosses the start/finish line? Be sure to answer to the correct number of significant digits and include units. Answer:On a velocity-time graph velocity is always the $ variable, and time is always the $ variable.You can calculate displacement by finding the Select one: O a. area under a velocity-time graph Ob. area under a position-time graph O c. slope of a velocity-time graph O d. slope of a position-time graph