the two people in figure 1 each exert a force on the bicycle. if the forces are F1=10N toward the right and F2=20N toward the le
2 answers:
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The representation of the traffic flow is determined by three main characteristics of this: The flow, the density and the speed. The relationship between the three helps to improve the design of the roads as well as all kinds of facilities operations.
The mathematical relationship that groups them is given by the function:
Where,
= Speed
k = Density
q = Flow
Through it it is possible to obtain properties of this by which,
- When the density on the road is zero, the flow is also zero because there are no vehicles on the road
- As the density increases, the flow increases
- When the density reaches a maximum jam density, the flow must be zero because the vehicles will line up from end to end
- The flow will also increase to a maximum value, increases in density beyond that point result in flow reductions.
- Speed is the average speed of space.
The cliff is 12.71m tall.
Why?
Before solving the problem, we must remember that the phone was dropped, it means that there is no initial velocity, also, the acceleration acting on the phone is the acceleration due to gravity.
So, to find how tall is the cliff, we can use the following equations:
Now that we know the time, we can calculate how tall is the cliff:
Hence, we have that the cliff is 12.71m tall.
Have a nice day!