Choose the word that does not belong to each group. Rb, H,K, Be(not...)
Calcium, Chlorine, Coblant, Copper (not...)
Fluorine, Iodine, Hydrogen, Bromine(not)
Ga, So, In, B(not...)
Malleable, shiny, dull, good conductor of electricity and heat (not...)
Ni, Co, O, Au(not...)
Silicon, Sodium, Germanium, Arsenic (not...)
Chlorine, Iron, Nitrogen, Neon (not...)​

i don't see a text, but i am gonna assume this *orbit* the curved path, usually elliptical, described by a planet, satellite, spaceship, etc., around a celestial body, as the sun.

there is none because earth is stationary and flat.

(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