An automobile accelerates from rest at
1.9 m/s2 for 30 s. the speed is then held
constant for 23 s, after which there is an ac-
celeration of -3.3 m/s' until the automobile
stops.
what total distance was traveled?
answer in units of km.

Answer(b) both involve the use of levers;

How is it possible that phylogenies based on sequences from nuclear genomes and organellar genomes (i.e., chloroplasts and mitochondria) from the same group of species yield phylogenetic trees with different branching orders?   answer :   the genome of the endosymbiont is more closely related to members of the group in which it originally evolved, while the nuclear genome of the engulfing organism has its own evolutionary trajectory.