Part A

Ferns that eject spores generally do so in pairs, with two spores flying off in opposite directions. The structure from which the spores are launched is quite lightweight.

If it takes a certain amount of energy to eject each spore, explain how launching the spores in pairs provides for the greatest initial launch speed for each spore.

Match the words in the left column to the appropriate blanks in the sentences on the right. Make certain each sentence is complete before submitting your answer.

seed

elastic potential

stem

$W=\frac{F}{}x$

$W=Fx$

kinetic

If the springy part of the fern were attached to one seed and the stem, then wl energy of a springy part is converted to energy, some of the would be on the stem.

In fact, if the stem has very little mass, then it would move a greater distance $1$ according to $,$ more work would be done on the $q,1$

$q,$

If there are two seeds, then each will leave with the same

ener

wasted on unwanted motion of the stem.