Question

X1=8+5t-2t^2 S4=? V4=? X2=3+2t^2 X3=t-8

Answer 1

Найти силу трения вагона массой 30т если коэффициент трения 0,04

Answer 2

Calculation of X1

To calculate the value of X1, we can use the given equation:

X1 = 8 + 5t - 2t^2 + S4

However, it seems that there might be some missing information, as S4 and V4 are not defined. If you can provide more details or clarify what S4 and V4 represent, I'll be able to give you a more accurate answer.