A stream of water flowing horizontally with a speed of `15 ms^(-1)` pushes out of a tube of cross sectional area `10^(-2)m^(2)` and hits a vertical wall near by what is the force exerted on the wall by the impact of water assuming.that it does not rebound? (Density of water `=1000 kg m^(3)`)

Explanation

Here , ` upsilon = 15 ms^(-1) `
Area of cross section , ` a = 10^(-2) m^(2) , F = ? `
Volume of water pushing out/sec `= a xx upsilon = 10^(-2) xx 15 m^(3) s^(-1)`
As density of water is `10^(3) kg //m^(-3)` , thereforce mass of water striking the wall per sec
`m = (15 xx 10^(-2)) xx 10^(3) = 150 kg//s`
As `F = ("change in linear momentum")/("time") :. F = (m xx upsilon)/ (t) = (150 xx 15)/(1) = 2250 N`.