A caterpillar is climbing vertically on a leaf. Its motion is shown on the following graph of vertical position yy y y vs. time tt t t . 1\small{1} 1 2\small{2} 2 3\small{3} 3 4\small{4} 4 5\small{5} 5 6\small{6} 6 7\small{7} 7 8\small{8} 8 9\small{9} 9 1\small{1} 1 2\small{2} 2 3\small{3} 3 4\small{4} 4 5\small{5} 5 6\small{6} 6 7\small{7} 7 y(m)y(\text m) y(m) t(s)t(\text s) t(s) Graph of y (in meters) vs. t (in seconds) that starts at 6 m at 0sec, decreases linearly to 2m at 4 sec, stays constant at 2m from 4 sec to 7 sec, increases linearly to 5 m from 7 sec to 9 sec, then stays constant until 10 sec. What is the instantaneous velocity of the caterpillar at time t=6 st=6\text{ s} t=6 s t, equals, 6, start text, space, s, end text ?

2.which choice most accurately explains what happens to the bonds between atoms when water changes to steam, and what becomes of the energy added during this phase change? when water changes to steam bonds between molecules are created. after reaching the boiling point, energy is used to change bond strength and change the kinetic energy of the atoms. when water changes to steam bonds between molecules break apart. after reaching the boiling point, energy is used to break bonds, but does not affect the kinetic energy of the atoms. when water changes to steam bonds between molecules are created. after reaching the boiling point, energy is used to break bonds, but does not affect the kinetic energy of the atoms. when water changes to steam bonds between molecules break apart. after reaching the boiling point, energy is used to change bond strength and change the kinetic energy of the atoms.