This preview shows pages 1–6. Sign up to view the full content.
This preview has intentionally blurred sections. Sign up to view the full version.
View Full DocumentThis preview has intentionally blurred sections. Sign up to view the full version.
View Full DocumentThis preview has intentionally blurred sections. Sign up to view the full version.
View Full Document
Unformatted text preview: Problem Solution Strategy for projectiles: 1. Identify v o and 2. Obtain v x = v o cos and v yo = v o sin 3. The xposition and the yposition are: 2 1 os sin v t y v t gt = ( 29 ( 29 cos sin 2 o o x v t y v t gt = = 4. The horizontal and vertical velocity of the projectile at any instant are: v x = v x0 v y = v y0 gt 5. Use these information in the equations of motion to solve for the unknown. 1 An artillery shell is fired with an initial velocity of 100 m.s1 at an angle of 30 above the horizontal. Find: a. Its position after 8 s v o = 100 m.s1 , = 30 v x = 100 cos 30 x = ( v o cos ) t t = 8 s v yo = 100 sin 30 = 86.6 m.s1 = 50 m.s1 = 86.6(8) = 692.8 m Position is: 692.8 i + 86.4 j y = v yo t gt 2 = 86.4 m = 50(8) (9.8)(8) 2 2 An artillery shell is fired with an initial velocity of 100 m.s1 at an angle of 30 above the horizontal. Find: b. Its velocity after 8 s v o = 100 m.s1 , = 30 v x = 100 cos 30 t = 8 s v yo = 100 sin 30 = 86.6 m.s1 = 50 m.s1 v y = v yo gt 86.6 ms1 = 50 (9.8)(8) =  28.4 m.s1 v x = 86.6 ms v y v 2 2 x y v v v = + 2 2 86.6 28.4 = + = 91.1 m.s1 1 28.4 tan 36.6  = = 37.8 o 3 An artillery shell is fired with an initial velocity of 100 m.s1 at an angle of 30 above the horizontal. Find: c. The time required to reach its maximum height. v o = 100 m.s1 , = 30 v x = 100 cos 30 t = 8 s v yo = 100 sin 30 = 86.6 m.s1 = 50 m.s1 v y = v yo gt When the shell reaches its maximum height, v y = 0 yo v t g = = 5.1 s 0 = v yo gt12 50 ms 9.8 ms = 4 An artillery shell is fired with an initial velocity of 100 m.s1 at an angle of 30 above the horizontal. Find: c. The horizontal range of the shell....
View
Full
Document
This note was uploaded on 05/01/2011 for the course PHY 2048 taught by Professor George during the Fall '10 term at Edison State College.
 Fall '10
 George
 Physics

Click to edit the document details