Water flows through a horizontal cross-sectional pipe (density 1000 kg/m3

). The pipe’s cross-sectional area reduces from 100cm2

to 80cm2

. The pressure before being reduced is 5 kPa and the

velocity flow in section 1 is 4 m/s. What is the pressure at the end

where the pressure is being reduced?​

answer: the direction of the wind is expressed as the direction from which the wind is blowing. for example, easterly winds blow from east to west, while westerly winds blow from west to east.

explanation:

we need to know the time interval during which the force acts. impulse of force = momentum change

where’s the list ? the question is incomplete