bonjour
UN = 234 - 90 = 144 m
UT = 155 - 25 = 130 m
NT² = 144 ² + 130 ²
NT² = 37 636
NT = √37 636 = 194 m
2) distance totale de leur course = 4 ( 155 + 234 + 194+ 25+ 90) = 2 792 m
3) 10 min 42 s = 642 s
2 792 : 642 = 4.35 m/s
4) 4.35 m / s = 0.00435 x 3600 = 15.66 km/h
55 min 11 s = 3311 s
15 000 : 3311 = 4.53 m/s = 0.00453 x 3600 = 16.30 km / h
