A ball is thrown with an initial velocity vo = 12 m/s making an angle 00 = 58° above the horizontal. It hits the wall of a building after 0.5 s. What is the direction of the velocity of the ball just before hitting the wall? Neglect air resistance and use g = 10 m/s². %3D 39.1 deg 33.3 deg 26.5 deg 18.9 deg 10.5 deg
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Q: 1. A 5 kg projectile was shot from the edge of the cliff 100 m above ground level at an angle O=29°.…
A: Motion of projectile can be divided into x component and y component.
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Q: b) What is the y component of the initial velocity? O 21.3 m/s O 16.6 m/s O 25.8 m/s 8.0 m/s
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Q: slope of best-fit line = sin(20) 0= What additional data would allow you to determine definitely…
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Q: Use this scenario for the next two questions: A projectile is launched from the ground with the…
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Q: A roofer tosses a small tool to the ground. What minimum magnitude vo of horizontal velocity is…
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A: Write the equation for the initial horizontal velocity.
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Q: A diver runs off a platform with an initial horizontal velocity of 1.16 m/sin the positive…
A: Horizontal velocity =1.16m/s Height of platform =8.9m
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- ab 3. Three projectiles (A, B, and C) are launched with different initial speeds so that they reach the same maximum height, as shown in the figure. List the projectiles in order of increasing initial speed (smallest v; written in the first blank). у then1. A ball is thrown into the air with an initial x velocity of 15 m/s and an initial y velocity 10 m/s from an initial height of 20 m. a) What is the maximum height of the ball? How long does it take the ball to reach its maximum height? b) What is the range of the ball?1. Consider a projectile problem. When you use the equations v = vo + at and y = y0 + 20yt + gt? you are making three assumptions. What are they?
- 1. Given velocities of two identical billiard balls just before impact, determine post- impact velocity of each ball. COR = 0.92. Ignore effects of friction. V82 %3D A 35° 75° 30 ft/s 40 ft/s1. Two projectiles, both with a velocity of 50 m/s, are thrown from the same spot. One of them is thrown with an angle of 60 degrees, and the other one is thrown with an angle of 45 degrees. However, they both land on the same spot on top of a brick wall. How high is the brick wall?40 30 Figure 1. The red points from 1 to 15 show the successive locations of a puck at times t=0s, 1/6 s, 2/6 s, 3/6 s, 4/6 s, etc. Connecting these points with the blue curve shows the puck's trajectory. The blue coordinate system is tilted and displaced with respect to the black coordinate system. 20 15 In Figure 1, at red point 1 is the x-component of the velocity of the puck positive or negative? 10 25 10 35 40 45 50. 55 Use the blue coordinate system. O Negative O Positive
- 7. A bullet is fired downward at an angle of 30° below the horizontal. 3.20 seconds later, the bullet hits a target that is 120 m horizontally to the right of the starting point. Let x direction be to the right and y direction point upward. a) Find vox, the x-component of the initial velocity of the bullet. b) Find the y-component of the initial velocity of the bullet. Voy,The position of a bird in the xy-plane is given by = (4.0m-x t²)î + Btĵ where x= 2.5 m/s2 and B = 5 m/s . What is the magnitude of bird's net velocity at 2.0 s? %3D 4.0 m/s O7.1 m/s O 11.2 m/s 15 m/s O -5.0 m/sIn a ballistic pendulum lab we used the law of projectile to determine the initial velocity. The ball was released with some initial speed V from the table, the table has an altitude of 1.1 m and the ball land 2.3 m away. What is the muzzle velocity of the ball as it shot from the gun? 4.9 m/s O 7.0 m/s O 6.1 m/s O 8.0 m/s
- 24. A shell is fired with a horizontal velocity in the positive x direction at a speed of 330 m/s from the top of an 80- m high cliff. The shell strikes the ground 1330 m from the base of the cliff. What is the magnitude of the velocity of the shell as it hits the ground? Hint: you need to determine horizontal and vertical components of the final velocity first, from the kinematic equations, then calculate magnitude of the velocity. While the horizontal velocity remains constant, the vertical velocity does not. You will need time of flight to determine the latter. 80 m 1330 m A) 4.0 m/s B) 9.8 m/s B) 9.8 m/s C) 82 m/s D) 170 m/s (E) 332 m/sA solid metal ball is thrown from the top of a building at an angle of 20° above the horizontal with an initial speed of 12 m/s. The ball lands on the ground 2.5 s after it is thrown. What is the height of the building (in m)? m Need Help? Submit Answer Read It6.