Question

qual a velocidade escalar média de uma pessoa que percorre 40 km em 20 min (em km/h e m/s)

Answer 1

m/s                                                             m/s → km/h
40 km → 40.000 m                               33,3 m/s ×3,6 → 119,98 km/h

20 min → 1200 s                                     

Vm = ΔS/ΔT                                         

Vm = 40.000/1200                                 

Vm = 33,3 m/s