Questions

1 answer:

8 0

1. v=d/t=7.5/1.5=5 km/h

2. v=d/t=(v1*t1+v2*t2+v3*t3)/(v1+v2+v3)=(15*10+20*10+25*5)/(10+10+5)=
=(150+200+125)/25=475/25=19 m/s

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almond37 [142]

Answer:

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