Asked by esther
a tortoise walks north at 0.4 mg for 14 meters, then north at 0.2mg for 30 meters ,then south at 0.3 m/s for 60 meters.what is his average speed?
Answers
Answered by
Graham
Assuming you mean m/s not mg.
North at 0.4 m/s for 14 m takes 35 s.
North at 0.2 m/s for 30 m takes 150 s.
South at 0.3 m/s for 60 m takes 200 s.
Speed is independent on direction.
Average speed is:
= (total distance)/(total time)
North at 0.4 m/s for 14 m takes 35 s.
North at 0.2 m/s for 30 m takes 150 s.
South at 0.3 m/s for 60 m takes 200 s.
Speed is independent on direction.
Average speed is:
= (total distance)/(total time)
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