Mars has a mass of 642,000,000,000,000,000,000,000 kg. How would scientists express this number in scientific notation? A. 0.64224 kg B. 0.642 x 1024 kg C. 0.642 × 1021 kg D. 6.42 x 1023 kg​

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

i do.

explanation:

i want to explore the wonders of the universe and find out if there really is life out there. i think the universe is beautiful.