h=0,5*g*t1^2; g=9,8; t1=2,5; vg=S/t; S=10; t=5; vb=g*t1; t1=2,5; v=(vb^2+vg^2)^0,5; cos(b)=vg/v; (v^2)/R=g*cos(b); R=(v^2)/(g*cos(b));
h=0,5*g*t1^2; g=9,8; t1=2,5; vg=S/t; S=10; t=5; vb=g*t1; t1=2,5; v=(vb^2+vg^2)^0,5; cos(b)=vg/v; (v^2)/R=g*cos(b); R=(v^2)/(g*cos(b));