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Ritaee
@Ritaee
May 2019
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Bonjour pourriez vous m'aider svp ?
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Commentaires (2)
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
0 votes
Thanks 1
ritaee
Escuse moi pour la 4) pourquoi avoir mit 3600 ?
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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