Which of the following quantities are constant for a projectile during it's flight? select all that apply! 1. r 2. y 3. v 4. vx 5. x 6. ax 7. ay 8. vy
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Which of the following quantities are constant for a projectile during it's flight? select all that apply!
1. r
2. y
3. v
4. vx
5. x
6. ax
7. ay
8. vy
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- 1. A bullet is fired at an initial velocity of 150 m/s and an angle of 56° at the top of a 130 m tall building. Neglecting air resistance, determine the following: a. The maximum height above the level ground that can be reached by the bullet. b. The time for the bullet to hit the ground. c. The velocity with which the bullet will hit the ground.. Consider the vectors shown. Which is a correct statement about A + B ? A. x-component > 0, y-component >0 B. x-component >0, y-component 0 D. x-component 0 %3D y В (15.0 m) D (10.0 m) 30.0° 53.0° 25.0° Č (12.0 m) A (8.00 m)1. Determine the equivalent directions for the given vectors. a. 35° N of E b. 20° W of S c. S 40° E d. N 65° W
- 8. Consider a projectile motion in two dimensions. Let the muzzle velocity of the projectile be vo = 300 m/s and the angle of elevation be (8=290). Consider k=0.021 and the maximum height is A. 896.34 m B. 456.31 m C. 917.43 m D. 665.43 mA golf ball is driven off a tree that is elevated 10m above fairway. The initial velocity of the ball is 40m/s with an angle of 40° at the horizontal. a. Maximum height? b. Range? c. Velocity of ball when it reaches fairway?6. A2 kg ball was thrown in the air from an angle of 30° moving with a velocity v=20 m/s. Assume the initial starting point is on the ground. a. Illustrate a diagram of the scenario. b. Compute for the components of velocity. nc. Compute the half time of flight. imiz ez d. Compute for the maximum height. e. Find the range of the trajectory.
- 4. 1 2. Three ants, A, B, and C, travel along the paths shown in the Figure. All uhe ants start at 1 and finish at 2. A. Arrange the distance travelled by A, B, and C from highest to lowest. B. Arrange the magnitude of the displacement of A, B, and C from highest to lowest. 65 A 1. A truck moves 20.0 km north, then 30.0 km in the direction 30° east of ng then 40.0 km west. Determine the following: A. Total distance traveled by the truck B. Displacement vector of the truck6. man stands on the roof of a 50 m tall building and throws a ball with a speed of 25 m/s at 40° above the horizontal. If we ignore the air resistance; a. Find the vertical and horizontal components of the ball's initial velocity. b. Find the maximum height above the ground that the ball reaches. c. Find the ball velocity (in unit vector nutation) just before it strikes the ground. d. At what horizontal distance from the edge of the building does the ball strikes the ground? e. What is the vertical acceleration of the ball at the maximum height? a. Vox 19.15 m/s Voy 16.07 m/s b. y = 50+ 13.18 = 63.18 m e. c. Vx = Vox = 19.15 m/s v=vxî + vyĵ = 19.15î — 35.18ĵ d. x = 100.16 m ay = -9.8 m/s² Vy = -35.18 m S 0000000000 00 DO 00 00 vo 40° 50 mD). i.,ii.,iii. Please!
- Julie throws a stoen horizontally from the top of a 25.0 m cliff. The stone lands 40.0 m from the edge of the cliff. What is the initial horizontal velocity of the stone? Round each of the following numbers to three significant digits. a. 7.8361 b. 85.51 c. 0.03245 d. 0.5996A projectile is fired with an initial velocity of 140m/s at 30° above the horizontal. The range of the projectile is Select one: a. 1697m b. 1442m c. 1033m d. 1281m1. A 5 kg projectile was shot from the edge of the cliff 100 m above ground level at an angle O=29°. 12s later, it lands on the ground. a) What was the initial speed of the projectile? Hint: consider the y-component of the motion first b)What is the initial x-component of projectile's velocity? c) Determine the horizontal position of the projectile after landing (hint: not a range!) d)At the instant just before the projectile hits the ground, what is its velocity (magnitude and direction)?