Respuesta :

velocity = distance / time      v= d/t          firstly you change 3000 m into km     distance  D = 3000/1000  = 3 km             secondly   time t = 21 min      using velocity formula v = d/t       = 3 km/21min       =0.142km/min

Velocity can be defined by the ratio of the distance traveled by object and time. The velocity of the person will be 0.142 km/min.

Velocity:

[tex]v = \dfrac dt[/tex]

Where,

[tex]v[/tex] - velocity

[tex]d[/tex] - distance = 3000 m = 3 km

[tex]t[/tex] - time - 21 min

Put the values in the formula,

[tex]v = \dfrac 3{21}\\\\v =0.142 \rm \ km/min[/tex]

Therefore, the velocity of the person will be 0.142 km/min.

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