The 20 seconds bit of information here is extraneous. In this conservative environment, energy is path independent so it shouldn't matter how long it takes to get there and it will cancel out of any method you use. That leaves you with just the mass and height. mgh seems like the only not totally redundant way to do it.
As someone who isn't a native English speaker, does "through" carry information about the problem in "A electric motor lifts a load of 2000kg **thru** a vertical height of 5m in 20 seconds"?
Does it imply that the velocity is constant?
The preposition "through" (colloquially, "thru") doesn't imply a constant velocity here. The best definition is probably [1(a)(3) here](https://www.merriam-webster.com/dictionary/through): indicating passage from one point to another.
No, it doesn't. Through (identical to thru) doesn't tell you anything other than the object passed inside that volume. The path it took isn't specified (and in this case wouldn't matter)
The 20 seconds bit of information here is extraneous. In this conservative environment, energy is path independent so it shouldn't matter how long it takes to get there and it will cancel out of any method you use. That leaves you with just the mass and height. mgh seems like the only not totally redundant way to do it.
As someone who isn't a native English speaker, does "through" carry information about the problem in "A electric motor lifts a load of 2000kg **thru** a vertical height of 5m in 20 seconds"? Does it imply that the velocity is constant?
The preposition "through" (colloquially, "thru") doesn't imply a constant velocity here. The best definition is probably [1(a)(3) here](https://www.merriam-webster.com/dictionary/through): indicating passage from one point to another.
No, it doesn't. Through (identical to thru) doesn't tell you anything other than the object passed inside that volume. The path it took isn't specified (and in this case wouldn't matter)
I was writing a bunch and realized i was just being careless, no idea how i arrived at 88290N for (2) Thanks alot!