chuck was chopping wood. when he was done he had 25 kg of firewood what was most likely the weight of the wood before he chopped it

The weight of the wood before he chopped it is 245 N

Step-by-step explanation:

The law of conservation of mass states that for a given isolated system, mass (or matter) can not be created neither can it be destroyed, but it can be transformed into different forms

Therefore, whereby all the wood Chuck chops is taken as firewood, (wood which is dry is about 100% consumable as firewood) the mass of the wool before he chopped the wood = The mass of the firewood he had after chopping the wood = 25 kg

Weight = Mass × The acceleration due to gravity, g

g = Constant = 9.8 m/s²

The weight of the wood before he chopped it = 25 kg × 98 m/s² = 245 N.

b) the dogs need to shift their focus to human scent.

answer: -2+√x,-2-√x

i hope this , i don't know if you're looking for a pair or not.