(c) With a1= 0, x = (1/2)a1t2 + vit becomes x = vt or x =15m/s(35s) = 530m.
(d) a2 = (Vf - Vi) / t ; a2 = [25m/s - 15m/s]/8.0s = 1.25 m/s2.
(e) ΣF=Ma; Fe-Ff =Ma2; Fe-1800N =2400kg(1.25m/s2); Fe=1800N+3000N = 4800N.
Объяснение:
1000000000000 провилно
(c) With a1= 0, x = (1/2)a1t2 + vit becomes x = vt or x =15m/s(35s) = 530m.
(d) a2 = (Vf - Vi) / t ; a2 = [25m/s - 15m/s]/8.0s = 1.25 m/s2.
(e) ΣF=Ma; Fe-Ff =Ma2; Fe-1800N =2400kg(1.25m/s2); Fe=1800N+3000N = 4800N.
Объяснение:
1000000000000 провилно