Byłabym zobowiązana gdybyście pomogli mi z zadaniem ze screena. Pozdrawiam.

Dane: [latex]m=2kg[/latex] [latex] alpha =30^o[/latex] [latex]h=0,8m[/latex] [latex]v_o=0[/latex] [latex]T=0[/latex] [latex]a=?[/latex] [latex]t=?[/latex] [latex]v=?[/latex] [latex]F_w=Q_1[/latex] [latex]Q_1=Qsin alpha =mgsin alpha [/latex] [latex]a= frac{F_w}{m} [/latex] [latex]a= frac{mgsin alpha }{m} [/latex] [latex]a=gsin alpha[/latex] [latex]a=10 frac{m}{s^2} * frac{1}{2} =5 frac{m}{s^2} [/latex] [latex]sin alpha = frac{h}{l} [/latex] | l-długość równi [latex]lsin alpha =h[/latex] [latex]l= frac{h}{sin alpha } [/latex] [latex]s=v_ot+ frac{at^2}{2} [/latex] [latex]v_o=0[/latex] i [latex]s=l[/latex] => [latex]l= frac{at^2}{2} [/latex] [latex]at^2=2l[/latex] [latex]t= sqrt{ frac{2l}{a} } [/latex] [latex]t= sqrt{ frac{ frac{2h}{sin alpha } }{a} } [/latex] [latex]t= sqrt{ frac{2h}{asin alpha } } [/latex] [latex]t= sqrt{ frac{2*0,8m}{5 frac{m}{s^2}* frac{1}{2} } } = sqrt{0,64s^2} =0,8s[/latex] [latex]v=v_o+at[/latex] [latex]v_o=0 => v=at[/latex] [latex]v=at[/latex] [latex]v=5 frac{m}{s^2} *0,8s=4 frac{m}{s} [/latex]