Question

Transforme em m/s:
1)a) 18 km/h B)54km/h c)900km/h d)1400km/h

Answer 1

a)18÷3,6=5m/s
b)54÷3,6=15m/s
c)900÷3,6=250m/s
d)1400÷3,6=388,8m/s

Answer 2

Transforme em m/s:
1)a) 18 km/h B)54km/h c)900km/h d)1400km/h

a) 18 km/h
1 km = 1000m
1 h = 60 min
1 min = 60 s
1 h = 60 x 60 = 3.600 s
 18 km/h

18 x 1000 m              18.000 m
----------------- =           ------------- simplificando =  5 m/s
   3.600 s                       3.600 s


B)54km/h
1 km = 1000 m
 1 h = 60 min
1 min = 60 s
1 h = 60 x 60 = 3.600 s
54km/h

54 x 1000 m                  54.000 m
----------------      =           ------------- = simplificando =  15 m/s
    3.6000 s                        3.600 s

agora VOU FAZER DIRETO   ok!!!!

c)900km/h

900 x 1000 m                              900.000 m
-----------------              =               ------------- -- =  simplifando = 250 m/s
     3.600   s                                   3.600 s


d)1400km/h
1400 x 1000 m                    1.400.000 m
--------------------        =         ------------------- = simplificando = 388,88...m/s
    3.600 s                                 3.600 s


388,88 .. ≡   388,89 m/s      obs.: ≡ (aproximado)