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L1Q2-2: Average Velocity vs.Average Speed - Part l0.5/3 points (graded)Peter is training for a race. He sprints24 m north in 4s, then walks due southback to his starting position in a time 12s.In the following, take north as the +adirection.Average VelocityAverage SpeedWhat is Peter'saverage velocity ashe sprints?What is Peter'saverage speed as hesprints?

Answer»

average velocity will be zeroas he returned back to the original position hence the displacement is zero

average speed =total distance/total time=24+24/4+12=48/16=3m/sec



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