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alexandr402 [8]
3 years ago
10

You have two photos of a person walking. One shows the person at the corner of Third and Main streets, the other shows the perso

n at the corner of Tenth and Main streets. There are lampposts at every corner in this town, and the first picture shows it to be 10:32:00 exactly. The second picture shows it to be 10:49:30. You know three facts: (1) All of the clocks are synchronized; (2) there are exactly 12 equal-sized blocks per kilometer in this town; and (3) the streets that cross Main in this area are numbered consecutively, with no interruptions. What is the person’s average speed in kilometers per hour?
Physics
1 answer:
SCORPION-xisa [38]3 years ago
8 0
  <span>average speed 
= [(10-3)/12 km] / [(49.5-32.0)/60 hour] 
= 5*7 / 17.5 
= 2 km/h .</span>
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