A river is flowing at 10 m/s find kinetic energy of 2 cubic metres of water
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Velocity = 10m/s
Mass = 2 cubic metres
KE = 1/2 mv^2
=1/2×m×v×v
= 1/2×2×10×10
= 1/2×200
= 100J
Mass = 2 cubic metres
KE = 1/2 mv^2
=1/2×m×v×v
= 1/2×2×10×10
= 1/2×200
= 100J
Answered by
0
Answer:
Kinetic energy of 2m³of water is 99,700J.
Explanation:
- In context to the given question, we have to find the kinetic energy of 2m³ of the water;
- Given,
Velocity of river = 10 m/s
Volume of water = 2m³
We know that,
Density of water = 997 kg/m³
mass of water = density of water x volume
Mass = 997 x 2 = 1994 kg
We know that,
Kinetic energy = 1/2 x m x v²
= 1/2 x 1994 x (10)²
= 199400/2
= 99,700 J
∴ Kinetic energy of 2m³of water is 99,700J.
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