Francisco kicks a soccer ball with speed 35.8 m/s at an angle of 30.0 degrees above the horizontal. What is the velocity of the ball as it lands on the ground? (0 £ + 0 ŷ ) m/s (0 £ – 17.9 ŷ ) m/s (31.0 £ – 17.9 ) m/s (31.0 £ + 0 ŷ ) m/s (31.0 £ + 17.9 ŷ) m/s
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- A cannon ball is fired horizontally from a height of 20 m and strikes the ground at an angle of 45°. At what speed was the cannon ball fired? A. 14 m/s. B. 20 m/s. C. 28 m/s. D. 32 m/s. E. 40 m/s.A skier leaves a ski jump with a horizontal velocity of 18.1 m/s. The instant before she lands 4.5 seconds later, the magnitudes of the horizontal and vertical components of her velocity are: Question 5 options: 18.1; 18.1 m/s 18.1 m/s; 44.1 m/s. 44.0 m/s; 18.1 m/s. 44.2 m/s; 44.2. 36.2 m/s; 44.2 m/s.Two soccer players, Mia and Alice, are running as Alice passes the ball to Mia. Mia is running due north with a speed of 6.20 m/sm/s. The velocity of the ball relative to Mia is 4.80 m/sm/s in a direction 30.0∘∘ east of south.
- An Olympic diver is on a diving platform 4.5 m above the water. To start her dive, she runs off of the platform with a speed of 1.3 m/s in the horizontal direction. You will be asked to find the diver's speed just before she enters the water. What are the givens in the y-direction? v0y = 1.3 m/s; ay = -9.8 m/s2; Δy = 4.5 m v0y = 0 m/s; ay = -9.8 m/s2; Δy = 4.5 m v0y = 1.3 m/s; ay = 0 m/s2; Δy = -4.5 m v0y = 0 m/s; ay = -9.8 m/s2; Δy = -4.5 mA marble launcher shoots a marble horizontally from the height of 0.2 m above a horizontal floor. The marble lands on the floor 5 m away from the point directly below the launcher. How long did the marble stay in the air? A. 0.1 s B. 0.2 s C. 0.3 s D. 0.4The ball is served by the volleyball player with an initial velocity of 13.40 m/s at an angle of 20 degrees with the horizontal. (Show solution) Which of the following gives the height of the ball as it passes the net? A. y = 2.77 m B. y = 2.67 m C. y = 2.87 m Which of the following gives the distance (from the net) where the ball lands? A. 9.01 m B. 7.01 m C. 16.01 m
- An object is launched horizontally at a height of 30 m with an initial velocity of 20 m/s. The x-component of the initial velocity is: answer choices 20 m/s 0 m/s 15 m/s not enough informationA tennis ball is fired horizontally from a tube 2.7 m above the ground at 1.6 m/s. The diagram below shows this scenario. How long will it take for the ball to reach the ground? A. 0.16 s B. 0.55 s C. 0.74 s D. 3.6 s How far will the ball travel horizontally before reaching the ground? A. 1.2 m B. 1.9 m C. 2.2 m D. 3.0 mIn the sport of billiards, event organizers often remove one of the rails on a pool table to allow players to measure the speed of their break shots (the opening shot of a game in which the player strikes a ball with his pool cue). The top of a pool table is a height ℎ=2.75 fth=2.75 ft from the floor. If a player's ball lands a distance ?=16.25 ftd=16.25 ft from the table edge, what is her break shot speed ?0? At what speed ?v did her pool ball hit the ground?
- 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 fighter plane moving 211.0 m/s horizontally fires a projectile with speed 47 m/s in a forward direction 30.0° below the horizontal. What is the speed of the projectile with respect to a stationary observer on the ground? a) 240 m/s b) 283 m/s c) 253 m/s d) 278 m/sYou are walking around your neighborhood and you see a child on top of a roof of a building kick a soccer ball. The soccer ball is kicked at 50° from the edge of the building with an initial velocity of 10 m/s and lands 20 meters away from the wall of the building. How tall is the building? Hint: look at your givens in the y-direction. Group of answer choices A. 20m B. 24 m C. 48 m D. 12 m