The world population is expected to reach by the year 2050.
a. 4 billion
c. 7 billion
b. 6 billion
d. 9 billion

Aroller coaster is traveling at 13 mi./s when you purchase a hill that is 400 m long and down the hill exonerate at 4.0 m/s squared what is the final velocity of the posterior found your answer to the nearest number