Choose the best description of a comet. 1 meter to 900 km diameter, rocky material, orbits between Jupiter and Mars
bodies orbiting the outer planets, some as large as planets
100 meter to 40 km diameter, coma and tail, orbits sun from Kuiper belt or Oort Cloud
a large meteor that appears as a fireball once it strikes the atmosphere

i don't understand. explain it clearly

we're given that v₀ = 0 and a = 5.4 m/s². therefore, since v = at + v₀ for constant acceleration the equation for velocity is

after 28s,

m/s

which i would round to 150 m/s as my final answer

the answer is false. this is because for ice to melt, it requires latent heat of melting. latent heat means heat energy required to change phase without any increase in temperatures. therefore, the ice will take energy from the environment to melt hence atmospheric temperatures will reduce.