Answer: 
Explanation:
Given
Car starts from the state of rest and acquires a velocity of
in 6 minutes
Final velocity in m/s is 
Using equation of motion

Distance covered in 360 s

I think it’s 8 hours. I’m sorry if I’m wrong.
I just did 400 divided by 50
The conservation of the mass of fluid through two sections (be they A1 and A2) of a conduit (pipe) or current tube establishes that the mass that enters is equal to the mass that exits. Mathematically the input flow must be the same as the output flow,

The definition of flow is given by

Where
V = Velocity
A = Area
The units of the flow of flow are cubic meters per second, that is to say that if there is a continuity, the volume of input must be the same as that of output, what changes if the sections are modified are the proportions of speed.
In this way

