• 70 likes • 145 Views
FOOTBALL AND FUNCTIONAL DEPENDENCE. TASK:. A Football player passes the ball to his teammate. Determine on what depends the length of the flight of the ball. h. 60. L. 45. 30. 40. Yox=Vo cos. V OY =V O sin. y. V o. V oy. V ox. x. SOLUTION:. At max h => V y = 0
E N D
FOOTBALL AND FUNCTIONAL DEPENDENCE
TASK: A Football player passes the ball to his teammate. Determine on what depends the length of the flight of the ball.
h 60 L 45 30 40
Yox=Vo cos VOY=VO sin y Vo Voy Vox x
SOLUTION: Atmax h => Vy =0 Vy =V0sin - gt = 0 => traising = V0 sin _______________ g t flight =2 t raising L= x = (V0 cos ) t flight 2 L= V0 cos 2 V0 sin = V0 2 sin cos _______________________ _____________________________________________ g g 2 L= V0 sin 2 _________________________ g
The length of the flight 2 depends on the targeted initial speed V0 and on the value of angle Lmax => sin2 =1 => 2 =90 => =45 AtV0 =20 m/s Lmax=40m Comment: (the air resistance is neglected)
StanislavaIvanova, PlamenaTanevaand ManoelaDineva from 12aClassof 2010 y. Teacher:MargoMalinova School: SOU ”Zheleznik” Stara Zagora Bulgaria