Jawabanmu

2014-08-27T04:35:20+07:00
1.)Vx=V cos a=8 cos 60 =8.1/2=4
Vy=V sin a=6 sin 60 =6. 1/2√3=√3
V=√Vx²+Vy²=√(4²+√3²)=√(16+3)=√19