the answer to this qustion is c friction force
Answer:
work done=fdcosø
f=mg=450N
d=+3m
ø=180
450×3×cos(180°) power=work done/
time taken
1350×-1 p=135watts
on the globe , the largest continent on earth , asia lies in between eastern and northern hemisphere. it is also known that country china comes in asian continent. hence we can say that china also lies in between eastern and northern hemisphere.
hence the two hemispheres are northern and eastern.
That speed is (1m / 0.003sec) = 333 and 1/3 meters per sec .
The medium is not necessarily, but <u>could</u> be, air at sea-level pressure.