The same force is applied to two skateboards. One rolls across the room and the other moves a few feet and comes to a stop. Wher
e was there more work done? The skateboard that traveled the shorter distance shows more work because there was more resistance. The skateboard that traveled the longer distance shows more work because it was lighter. The skateboard that traveled further shows more work because the distance was greater. The skateboard that traveled the shorter distance shows more work because the force was greater.
The longer you spend reading and thinking about this question, the more defective it appears.
-- In each case, the amount of work done is determined by the strength of
the force AND by the distance the skateboard rolls <em><u>while you're still
</u></em> <em><u>applying the force</u>. </em>Without some more or different information, the total distance the skateboard rolls may or may not tell how much work was done to it.<em> </em> -- We know that the forces are equal, but we don't know anything about how far each one rolled <em>while the force continued</em>. All we know is that one force must have been removed.
-- If one skateboard moves a few feet and comes to a stop, then you must have stopped pushing it at some time before it stopped, otherwise it would have kept going.
-- How far did that one roll while you were still pushing it ?
-- Did you also stop pushing the other skateboard at some point, or did you stick with that one?
-- Did each skateboard both roll the same distance while you continued pushing it ?
I don't think we know enough about the experimental set-up and methods to decide which skateboard had more work done to it.
According to cuneiform tablets in the ancient world, straight lines cannot cross, and no motion in the world is not relative. Btw...I KNOW!!! GOT MILK???
The escalator does more work and the elevator has a greater power output.
Explanation:
The escalator does more work on the person because it is carrying them up. It also gives the person a chance to walk up the escalator making it a little more challenging than using just an elevator. The elevator has a greater power output because it can transport a person from one floor to another in just 10 seconds where as the escalator can do it in 15.
only if there is a net force of zero, the body will not move
some people may say B but that is wrong because maybe one force is greater than the other so the object would still move even though the forces are in opposite directions and parallel
i think it would be which angle converts the most potential energy to into kinetic energy of the turbine
Explanation: because the windmill makes kinetic energy and converts it into mechanical power. then a generator takes the mechanical power and makes it into electricity