Answer / harshitha

The velocity of with which the approaches or reaches the weir or notch before it flows over it.

Answer / sparsh jandial

It is the velocity at which two objects move towards or away from each other.
If objects are moving towards each other than Velocity of approach is turned positive or else negative.

Answer / garima sawhney

Velocity of approach may be defined as the velocity with which water in the channel approaches the weir before it flows over it.

Answer / zia ullah

The average velocity of water in a channel at the point where the depth over a flow measuring weir is recorded.

Answer / abid hussain

It is the velocity of fluid reaches the weir or notch before flows over it

Answer / hemant

it is the rate at which the separation between two moving particles decreases

Answer / sajjad

when any fluid has an obstruction while it is flowing then
there is some rise w.r.t previous level i.e vel. approach

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