Given:
v(final velocity)= 7.5 m/s
t(time taken to pedal along)=4.5 s
Displacement (s)=19 m
Now we know that
s=ut+1/2(at^2)
Where s is the displacement measured in m
u is the initial velocity measured in m/sec
a is the acceleration measured in m/s^2.
t is the time taken to cover this distance.
Substituting the given values in the above formula we get
19= 4.5u+1/2(a x 4.5 x 4.5)
20.25 a + 9 u = 38
Now we also know that
v= u + at
Substituting the given values in the above formula we get
7.5= u + 4.5a
Solving for u and a from the above equations we get
u = 0.944m/s
a= 1.45 m/s^2
Thus the initial velocity is 0.944 m/s
Hello.
The answer is <span>Cosmology.
</span>The origin, structure, and future of the universe are studied by Cosmology.
They study things like the big bang thery and studied mainly by nasa.
Have a nice day
Answer:
is it conduction because in that case it would be
Explanation:
the process by which heat or electricity is directly transmitted through a substance when there is a difference of temperature or of electrical potential between adjoining regions, without movement of the material.
Answer:
“So while yes, it is true that fat doesn't transform into energy… it is the transformation of fat into carbon dioxide that creates energy.” She says when our bodies give the signal that it needs more energy, lipase in fat cells helps release the fat into circulation
Explanation:
“So while yes, it is true that fat doesn't transform into energy… it is the transformation of fat into carbon dioxide that creates energy.” She says when our bodies give the signal that it needs more energy, lipase in fat cells helps release the fat into circulation