Question

z jaka predkoscia porusza sie cialo jezeli w czasie kwadransu przebylo droge 9000m?
18km/h ile to m/s?
45km/h ile to m/s?
0,8km/h ile to m/s?

Answer 1

v=s/t

v=9000m/900s=10m/s

 

18km/h= 5m/s

45km/h= 12,5m/s

0,8km/h ~ 0,3m/s

Answer 2

Dane:

s=9000m

t=15min =  900s

 

Szukane:

V= s / t 

V= 9000m / 900s = 10m/s

 

18km/h = 18 000m/h = 5m/s

45km/h = 45 000m/h = 12,5m/s

0,8km/h = 800m = 0,(2)m/s

 

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