madisong57 madisong57
  • 03-03-2016
  • Physics
contestada

A 49 Newton rock is lifted 2 meters in 5 seconds.
How much work is done?
What power is used?

Respuesta :

olemakpadu
olemakpadu olemakpadu
  • 03-03-2016
Work done is potential energy = mgh

mg = weight of the stone = 49 N

h = 5 m

Work done = (mg)h = 49 * 5 =      245 Joules.

Power =  Work done / Time taken

          =    245 / 5 =  49 Watts.
Answer Link

Otras preguntas

how can pure dry crystals of calcium chloride be obtained from a solution of calcium chloride
why didnt ralph want to tie his hair back?
Si 3 gallinas ponen 3 huevos en 3 días, ¿cuanto tardaran 24 gallinas en poner 24 huevos?
The main trade route that connected China and Rome was called the ____. A) Satin RoadB) Silk RoadC) Han RoadB) Roman Road
Ann had 60 fliers to post around town. Last week, she posted 23 of them. This week, she posted 34 of the remaining fliers. How many fliers has she still n
Indicate the type of hybridization for each atom of propenoic acid
What is the quotient?7-4ーks130-5○ 75〇fl517 777-7C园燜
What are good ways to protect your computer
can someone please help me with this question please anyone please
3(5z-7)+2(9z-11)=4(8z-7)-111