SCIENCE
PHYSICAL SCIENCES
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
Person A
|
|
|
Person B
|
|
|
Either A or B
|
|
|
None of the above
|
Detailed explanation-1: -Power: You can walk up a flight of stairs or you can run up a flight of stairs. Either way you apply the same force through the same distance so you do the same amount of work.
Detailed explanation-2: -Work can be calculated with the equation: Work = Force × Distance. The SI unit for work is the joule (J), or newton • meter (N • m). One joule equals the amount of work that is done when 1 N of force moves an object over a distance of 1 m.
Detailed explanation-3: -Examples of works : Pushing a car horizontally from rest; shooting a bullet (the powder does the work); walking up stairs; sawing a log. Was this answer helpful?
Detailed explanation-4: -Work is done when an object moves through some distance due to the force applied to it.