The tension in the horizontal towrope pulling a water-skier is 250 N while the skier moves due west a distance of 50 m. How much work does the towrope do on the water-skier?

no, they would

i'm a mechanic so i know all about this stuff.

none of the three examples you gave would do very good in a ice

motor oil gets extremely hot during operation and undergoes being thrown around, getting dirty,

syrups are sticky and thick. oil needs to be atleast a little runny to work in a car engine so that it does not clog parts like the camshaft or valves.

hope this !

can be answered using momentum.

momentum = p

p1= mass1 * velocity1

p1 = p2

therefore

p1 = 6kg * 4m/s

p1 = 24kgm/s

p2=m2 * v2

24 kgm/s = 7kg * v2

v2 = 24 kgm/s / 7kg

v2= 3.42 m/s

molecules are free to separate from each other and will take on the shape of the container. molecules move completely at random and high speeds. they vibrate in a fixed position and do not move around much. molecules expand to the edge of their container.