100 POINTS!! Please help A girl places a stick at an angle of 60.0° against a flat rock on a frozen pond. She pushes at
an angle and moves the rock horizontally for 2.00 m across the pond at a velocity of 4.00 m/s
and a power of 160.0 W. What force did she apply to the stick? How much work did she do?
Your response should include all of your work and a free-body diagram.

Which statement best describes the superposition principle? a.) if two in-phase waves arrive simultaneously at a point, their amplitudes add up b.) if two out-of-phase waves arrive simultaneously at a point, their amplitudes add up c.) if two in-phase waves arrive at a point one after another, their amplitudes add up d.) if two out-of-phase waves arrive at a point one after another, their amplitudes adds up