1) p = p2 - p1 ; p1 = 0; p = p2 ; p = mV;
S = V^2 - V0^2/2a ; V^2 = 2aS = 2*8*1 = 16; V = 4;
p = 0.2*4 = 0.8
2) По закону сохранения:
m1v1 = V(m1+m2) ; V = m1V1/(m1+m2) = (30000*1.5)/(30000+20000) = 0.9м/c
1) p = p2 - p1 ; p1 = 0; p = p2 ; p = mV;
S = V^2 - V0^2/2a ; V^2 = 2aS = 2*8*1 = 16; V = 4;
p = 0.2*4 = 0.8
2) По закону сохранения:
m1v1 = V(m1+m2) ; V = m1V1/(m1+m2) = (30000*1.5)/(30000+20000) = 0.9м/c