Question

Alguém pode me ajudar pfv?

Answer 1

1- Vm=Δs/Δt
Vm=450/(21-15)
Vm=450/6
Vm=75km/h
2-Vm=12/6
Vm=2m/s
3-Vm=Δs/Δt
5=100/Δt
5Δt=100
Δt=100/5
Δt=20s