2022 GENERAL SCIENCE 1 (CONTENT)

Boy 1 is powerful if he has done work within a sort time as compared to boy 2 who has completed his duty (work) within a longer period of time. All objects can be powerful or less e.g:

     -100 W electric bulb  is more powerful than a 60 W bulb.

     - 3000 W electric kettle is more powerful than 2000 W kettle.

-Exercise: Suppose Boy 1 does a 360 J work in 1 minute, while Boy 2 does 360 J of work in 30     seconds. who is more powerful?

-  P₁ = W/t  = 360/1 x 60 sec = 6W

-  P₂ =  W/t =360/30 sec = 12 W.

Therefore Boy 2  is more powerful that Boy 1.