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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? |
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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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