Question

Va rog să mă ajutați dau coroniță va rogg multtt​

Answer 1

1. 1080km/h=1080*1000m/3600s=300m/s

2. a) 5m/s=5*3600/1000=18km/h

b) 120m/min+ 72km/h+ 200cm/s= 120m/60s+ 72*1000/3600+ 200m/100s= 2m/s+20m/s+2m/s= 24m/s

3. d=1,2dm=0,12m

t=2min=2*60s=120s

vm=d/t=0,12m/120s=0.001 m/s

4. 18km/h=18*1000/3600s=5m/s

6m/s>5m/s

5. a=194km

ora in punctul a=9.45

b=35km

ora in punctul b=11.15

a)d=?

b)t=?

c)vm=?

a) d=a-b=194km-35km=159km

b)t=diferenta dintre ora 11.15 si ora 9.45= 1.30=90minute

c)vm=d/t=159km/1,3h=122,3 km/h=33,97m/s