Bob's school track is 400 meters. If Bob ran the first lap in 70 seconds, the second and third lap in 85 seconds each, what was his average speed in (m/s) for his entire run?
If each lap is 400 meters long, then 3 laps will have a total distance of 400*3 = <<400*3=1200>>1200 meters
The total time he ran was 70 on the first lap + 85 on the second one and 85 on the third lap, so his total running time was = 70+85+85 = <<70+85+85=240>>240 seconds
His average speed then is measured by the total distance he ran (1200) divided by the total time required (240) or 1200/240 = <<1200/240=5>>5 m/s
#### 5
Bob'un okul pisti 400 metredir. Bob ilk turu 70 saniyede, ikinci ve üçüncü turu 85'er saniyede koştuysa, tüm koşu boyunca ortalama hızı (m/s) cinsinden nedir?
Her tur 400 metre uzunluğundaysa, 3 turun toplam mesafesi 400*3 = <<400*3=1200>>1200 metre olacaktır.
İlk turda 70 + ikinci turda 85 ve üçüncü turda 85 olmak üzere toplam koşu süresi = 70+85+85 = <<70+85+85=240>>240 saniye
Bu durumda ortalama hızı, koştuğu toplam mesafenin (1200) gereken toplam süreye (240) bölünmesiyle veya 1200/240 = <<1200/240=5>>5 m/s ile ölçülür.
#### 5