Help With Fizics

[Laurysss]

My brother needs some help but I dont remember the fizics bs.

"A boat , wich will need to carry a 56 kg girl, is from logs. Each log is 20kg and the density 878 kg/m^{3. (} free fall acceleration is 10m/s^2).

 

^{1. One log density (answer - cm^3)}

^{2. The girls weight (in N(newtons))}

^{3. How many logs will the boat need so the girl can swim in a lake.}

 

 

 

Two trains are going facing each other - one is going 54 km/h and the other one is going 72 km/h. The first trains passenger notices that the second train pases in 4 secs. What is the lenght of the second train?

[david cassar]

1. density 0.878 g/cm^3
2. 56 x 10 = 560 N
Im working on the others lmao

[Laurysss]

1. density 0.878 g/cm^3

2. 56 x 10 = 560 N

Im working on the others lmao

 

The other half is when you do the other half.

[DeViLzzz]

Skip question #1 and #2 because you said she just needs to swim in the lake and she doesn't need a boat to do that. That is your answer for question #3. Is this a trick question given by his teacher?  It smells like it.  

[Laurysss]

Skip question #1 and #2 because you said she just needs to swim in the lake and she doesn't need a boat to do that. That is your answer for question #3. Is this a trick question given by his teacher?  It smells like it.  

No it needs to be done. I remember my teacher. A fucking butcher.

[david cassar]

 

 

The other half is when you do the other half.

Potatoes *-*

3. 3 logs i believe

4. v=d/t

 d= t x d    4 x 72 = 288 m

now give me potato pls 

[DeViLzzz]

No it needs to be done. I remember my teacher. A fucking butcher.

Well I am just saying that my answer isn't incorrect.  If the lake/water is there the girl can just jump into it and swim. LOL!

[Laurysss]

Well I am just saying that my answer isn't incorrect.  If the lake/water is there the girl can just jump into it and swim. LOL!

What if the girl doesnt know how to swim? You want her to drown? What a cruel person you are.

[DeViLzzz]

What if the girl doesnt know how to swim? You want her to drown? What a cruel person you are.

In my recommendation she would be swimming close to shore so she would have a better shot at not drowning and being saved if she started to have issues.

[Laurysss]

In my recommendation she would be swimming close to shore so she would have a better shot at not drowning and being saved if she started to have issues.

What if the girl is an extremist and is like 20 km away from the shore.

[Laurysss]

Potatoes *-*

3. 3 logs i believe

4. v=d/t

 d= t x d    4 x 72 = 288 m

now give me potato pls 

the 4th one should be in kN. Only the answer 560N was right lol.(its an internet site so it automaticly tells you if its correct). But thats just a miscommunication because I have to translate this 420 shit from my mother language to english.