Talk about the jobs that pipeline construction provides to citizens and wether or not it’s effects are ultimately eco-friendly
Answer:
The force required to move the quarterback with linebacker is <u>1215 N</u>
Explanation:



Using Newton's second law, it is established that F = Ma
Where F is net force acting on the system, a is the acceleration and M is mass of the two object 
Now consider both
as a system, so net force acting on the system is 
Substitute the given values in the above formula,


Force = 1215 N
<u>1215 N </u>is the force required to move the quarterback with linebacker.
Air for a diver comes out of a high pressure tank at - Same- pressure compared to the water around the diver (metered by the regulator).
This means the lungs are inflated with - Highly pressurized- gas.
This does not adversely affect the diver when deep underwater, because the entire environment around the diver is at -Same - pressure.
If the diver suddenly surface, the air in the alveoli in the lungs will still be at - a higher - pressure compared to the air around the diver, which will be at - a lower - pressure.
The gas in the diver's lungs will - expand - and can damage the alveoli.
a. Speed is defined as rate of change of distance per unit time whereas velocity is defined as rate of change of displacement per unit time.
b.
is the total time taken in the trip
c.
is the total distance
d.
towards right from the starting point.
e. 
f.
towards right.
Explanation:
a.
Speed is a scalar quantity while velocity is a vector quantity.
Speed is defined as rate of change of distance per unit time whereas velocity is defined as rate of change of displacement per unit time.
Speed is a directionless quantity while velocity constitutes direction.
b.
<em>Total time of round trip when we're given:</em>
- distance travelled to the right,

- speed while travelling to the right,

- time spent at gas station,

- time spent while travelling back towards the left,

- speed while travelling to the left,

<em>Now time taken for travelling towards right:</em>



<u>Therefore total time taken in the round trip:</u>



c.
<em>Now, distance travelled towards left:</em>



<u>Therefore total distance:</u>



d.
Now, total displacement:


towards right from the starting point.
e.
<u>Average speed:</u>



f.
<u>Average velocity:</u>


towards right.