Question

when water is flowing with a velocity of 2m/s then the kinetic energy of 1m3 of water is​

Answer 1

Answer:

Given, velocity of river, (v)=2m/s

Density of water, ρ=1.2g/cc

Mass of each cubic metre:

m=

10

−2(3

′

)

1.2×10

−3

=1.2×10

3

kg

∴ Kinetic energy =

2

1

mv

2

=

2

1

×1.2×10

3

×(2)

2

=2.4×10

3

J

=2.4kJ

Explanation:

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Answer 2

Answer:

formula =1/2*mv^2/V

   1/2*dv^2  =    (where d = density)

  1/2*1000*2^2   = (d of water =  1000)

     = 2000j/m^2

HOPE THIS HELPS