<p>2. In a two-dimensional elastic collision, a ball of mass 5 kg,moving at 4 m/s elastically collides with a ball of mass 3 kg whichis at rest. The final velocity
<p>A popular variety of coffee, Coffea arabica, is a tetraploidplant with 44 chromosomes per somatic cell. What would be thechromosome number in the following Coffea arabica variants:</p><p>a. A diploid variant</p><p>b.A