A yo-yo initially held at rest 91.1 centimeters above the ground. *Neglect any effects due to friction and air resistance. To the nearest tenth of a m/s, how fast is the yo-yo traveling when it reaches the ground?

Kinetic energy = 1/2mv^2. since the mass is constant we can form a ratio of it's kinetic energy at 60 divided by that at 30 to see ke(60)/ke(30) = +(60^2)/30^2). this may be said to 300% increase.

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.

Ceardrum passes to the cichela which then send it tovthe auditory nerve until youvhear it fullu