Answer:
1728.42857143 m/s²
0.00155883061577 s
259.264285715 m/s²
0.0103922041051 s
The child will get injured if he/she falls on a hardwood floor
Explanation:
t = Time taken
u = Initial velocity
v = Final velocity
s = Displacement
a = Acceleration
g = Acceleration due to gravity = 9.81 m/s²


Magnitude of deceleration is 1728.42857143 m/s²

Time taken is 0.00155883061577 s

Magnitude of deceleration is 259.264285715 m/s²

Time taken is 0.0103922041051 s
It is likely that the child will get injured if he/she falls on a hardwood floor.
It is less likely that the child will get injured if he/she falls on a carpeted floor.
Answer:
Sympathetic nervous system.
Explanation:
The sympathetic nervous system prepares the body for the “fight or flight” response during any potential danger. The sympathetic nervous system (SNS) increases heart rate. A faster heart rate (usually) pumps more oxygen-rich blood to the brain and lungs. This can give you the energy to run.
While you are waiting to begin a foot race, you can feel your heart race go up. This is the sympathetic nervous system at work.
<span>Nuclear power plants produce radioactive
waste that must be stored properly. It is very impossible for a nuclear power plant
to have no waste at all since lots of chemicals are used to create the process
as it gives energy to other machines. Nuclear energy can be used to power all
of the above choices. Radioactive waste can not be released into local water
supplies since the wastes are very radioactive and may cause mutation to the
fishes and bioaccumulation which will affect humans as well. It will also cause
air pollution if the chemicals are not stored properly.</span>
<span>The competitive exclusion principle states that when
two organisms attempt to fill the same niche, one will exclude the other from
the ecosystem. Research partitioning is an adaptive evolution that when species
are have similar preys, they compete with each other and one species is deemed
to extinct in the process however if two species are of different preys, then
they can exist with one another. To exist with one another, organisms belonging
to a same species either compete for the resources or divide it amongst
themselves. This concept is important because it helps in diversified ecology,
where animals and plants of the same species co-exist and creates a beauty with
nature.</span>