Appear to be
12. Some elliptical galaxies appe
perfect spheres. How are th
distributed within this kin
are the stars
kind of galaxy?
niy distributed
trip to an
used a telescope to
erent colors. Based
estion 8, which
tar's color?
se with many
14. All the planets in
the sun. What is
between the ort
planets?
A The inner p
orbit in dif
The inner
distance
© The oute
the sun
The out
the su:
ses farther ou
A The stars are evenly distrib
throughout the galaxy.
6. The center is very dense with
stars, and density decreases far
© Most of the stars are near the
of the sphere with dust clouds
the center.
The stars are spread throughout the
sphere in bands that look like the
arms of spiral galaxies.
near the outside
arth
வலாய

what are the statements

(newtons first law)

conservation of momentum law states :

momentum before collision = momentum after collision

momentum p (kg-m/s)= mass * velocity

say moving car=1 000 kg, velocity = 10 m/s then p = 1 000*10= 10 000 kg-m/s

say still car = 2 000 kg, velocity = 0 m/s then p = 2 000* 0 = 0 kg-m/s

total momentum prior to collision = 10 000 + 0 = 10 000 kg-m/s

momentum after collision = 10 000 kg-m/s

mass now = 1 000 kg+2 000 kg = 3 000 kg

10 000 = 3 000 kg* velocity m/s

10 000/3 000 = velocity

3.33 m/s = velocity after collision

an impulse is a force applied over time , momentum is exclusive of external forces and a perfect collision is implied

if the temperature drops and becomes cool

then the atmosphere can be freezing as the water vapor in the air is at maximum (100%) and can be severely cold

also can be snowing lightly as the moisture in the air will start to solidify

and btw this is not chemistry but