Question

Distanta100m timp masculin 9, 93 s timp feminin 10, 76 s la 200 m timp masculin 19,72s , timp feminin 21,71s la 400m timp masculin 43,86s timp feminin 47,60s stafeta 4×100m timp masculin 37,83s timp feminin 41,36s . A) vitezele medii in m/s si km/h . B) comparati viteza medie la 200m si la100m pentru barbati ..C) comparati viteza medie la stafeta 4×100mcu cea de la400m (femei si barbati )

Answer 1

a)Vom calcula vitezele medii pentru cele patru probe, ca medie aritmetica dntre viteza  la barbati, vb si viteza la femei, vf:
d1=100m; tb1=9,93s; tf1=10,76s
vb1=d1/tb1=100/9,93=10.07m/s; vf1=d1/tf1=100/10,76=9,29m/s; vm1=(vb1+vf1)/2
vm1=(10,07+9,29)/2=9,68m/s
vm1=9,68m/s=9,68m/1s=(9,68/1000)km/(1/3600)h
vm1=9,68×3,6 km/h=34,848km/h
d2=200m; tb2=19,72s; tf2=21,71s
vb2=d2/tb2=200/19,72=10,14m/s; vf2=d2/tf2=200/21,71=9,21m/s; vm2=(vb2+vf2)/2; vm2=(10,14+9,21)/2=9,67m/s
vm2=9,67m/s=9,67×3,6=34,834km/h
d3=400m; tb3=43,86s; tf3=47,60s
vb3=d3/tb3=400/43,86=9,12m/s; vf3=d3/tf3=400/47,60=8,40m/s
vm3=(vb3+vf3)/2=(9,12+8,40)/2=8,76m/s
vm3=8,76m/s=8,76×3,6=31,536km/h
d4=4×100m=400m
Continua tu, te rog!