Recent content by eefje

But how do i come to the Right solution ? What did i do Wrong in the latest answer i gave, and not only the positive of negative sign

N1=23*9,81N*cos(35°) = 184,8 Fw1= Fn*0,1= 18,48 N2=23*9,81=225,63 Fw2=Fn*0,1=22,563 (hB= cos55°*25=14,34) Epot=-Fw.d 23*9,81*14,34=-18,48*25-22,563*d 3235,53=-462-22,563*d 3235,53+462=-22,563*d 3697,53/-22,563=d 163,87=d

I have tried it with Epot=-Fw.d with TWo different FN but the solution is wrong

Thank you very much I understand it now :smile:

Thank you I understand it now

Thank you :smile:

Thank you :) but where is the friction 0,1 then? I will try to solve it an other time because I have tried it and i can't solve it maybe another time with the help of the things you have said

Is there only friction on the flat?. I have put the friction of the slope =0 and changed everything in the thing I have post and I come still on 174,86

Thank you! you mean just: m*g*h=-Fw*d 23*9,81*14,3=18,48 d=175,08 it isn't right is mine hB right?

Thank you very much ! I have changed the numbers now of the degrees but I don't understand what I have to do now

Homework Statement A child starts from rest and slides on a sled first slope down over a distance of 25 m . Then, the child slides further over a horizontal plane. The angle of inclination is 35 ° and the kinetic coefficient of friction between the sled and the snow is 0.100. The mass of the...

Thank you very much, I can solve it now. the 1/2 was a stupid mistake, but I didn't know that the distance in the 0,5 s important was. Thank you :)

you mean in the 0,5s ? Δv= Δx/ Δt and after that: Δx= a*Δt^2+Δv*t Δv=a*Δt

Hey Thank you for helping me, I will do it right the next time. In the 0,5 s he travels 6,945m i think (13,89*0,5). But I still can't solve it

Homework Statement reaction time of a driver to brake is 0,5s in that time the speed is constant the speed of a car is constant when he decides to slow down and to stop with -6,0 m/s2, the initial speed is 50 km/h Calculate the total stopping distance of the car Homework Equations Ve= -6,0*t...