Springs: A very light ideal spring of spring constant (force constant) 2.5 N/cm is 15 cm long when nothing is attached to it. It is now used to pull horizontally on a 12.5-kg box on a perfectly smooth horizontal floor. You observe that the box starts from rest and moves 96 cm during the first 1.6 s of its motion with constant acceleration. How long is the spring during this motion?
Fill in the blank(s) with the appropriate word(s).
19 cm
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Directly above Earth's equator lies the ________ in the sky.
A. Celestial equator B. ecliptic C. North Celestial Pole D. South Celestial Pole
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