A 71.0kg fireman slides down a 4.73 meter pole by applying 350. N against the pole with his hands. If he slides from rest, how fast is he moving when he reaches the ground?

Question

A 71.0kg fireman slides down a 4.73 meter pole by applying 350. N against the pole with his hands.  If he slides from rest, how fast is he moving when he reaches the ground?

anonymous · Answer

i got like 20 minutes to submit this answer

anonymous · Answer

i'm drowning

anonymous · Answer

acceleration due to gravity is 9.8

anonymous · Answer

NetForce=659.8-350=309.8

anonymous · Answer

divide by his mass 

we get net acceleration of 4.36m/s^2

anonymous · Answer

k....now how do we get that into v = ......m/s?

anonymous · Answer

or is that just the correct answer?

anonymous · Answer

vf^2= vi^2+ 2a d

anonymous · Answer

vf^2= 0 + 2 (4.36)(4.73)

anonymous · Answer

vf=6.42227

anonymous · Answer

take the root

anonymous · Answer

okay...yea i followed that

anonymous · Answer

I already have

anonymous · Answer

yea...you did it before i said it lol

anonymous · Answer

thanks a ton for your help with that

anonymous · Answer

I hope this is right

anonymous · Answer

it doesn't matter if it isnt...it's better than i was coming up with

anonymous · Answer

what were you thinking of?

anonymous · Answer

well i was doing it right...but didn't even think about gravity

anonymous · Answer

so i was coming up with weird answers

anonymous · Answer

and was close to just making an educated guess

anonymous · Answer

Yeah, always consider gravity unless it is really small. One good thing I notice is they use metric unit in math class now; finally

anonymous · Answer

it would be a pain if it were in stupid unit