Recent content by Neverland

and you can also use energy , but i don't think it woulb be much more easier

sorry, cos50 and sin50 above mean cos5 and sin5

sin45*v0*t=82*cos50 sin45*v0=g*t1 2*t1+t2=t sin45*v0*t2+0.5*g*t2^2=82*sin50 4 equations for 4 unknows we use the symmetry of the motion, and the independence of the motions in different directions

Key:2 the motion in the direction of gravity is not ralated with D, h=0.5gt^2. t is half of T, for T is up and down, and t is up or down