Water Is Flowing in a Drainage Channel of Rectangular Cross-Section

Multiple Choice

Water is flowing in a drainage channel of rectangular cross-section.The width of the channel is 15 m,the depth of water is 8.0 m,and the speed of the flow is 2.5 m/s.What is the mass flow rate of the water? The density of water is 1000 kg/m³.

A) 2.0 × 10⁵ kg/s
B) 2.0 × 10³ kg/s
C) 3.0 × 10⁵ kg/s
D) 3.0 × 10³ kg/s
E) 3.0 × 10² kg/s