# An engine pumps out 40k.g of water per second. If water comes out with a velocity of 3 m/s, then what is the power of engine?

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The Brainliest Answer!

M= 40 kg

v= 3m/s

t=1s

applying the formula of power

i.e.

P=

here work done is equal to the KE of the body i.e.

KE=0.5*m*v²

=0.5*40*9

=180 J

substituting the value of work done and time taken we get

P=

P=180J/s or 180 W

We know that power=work/time

and work =enegy =kinetic energy=0.5*40*9=180 J

so power=180/1=180 W

and work =enegy =kinetic energy=0.5*40*9=180 J

so power=180/1=180 W