Which of the following will reach the maximum range? a. A golf ball is hit at an angle of 90° above horizontal with a speed of 80 m/s. b. A golf ball is hit at an angle of 80° above horizontal with a speed of 90 m/s.
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Which of the following will reach the maximum range?
a. A golf ball is hit at an angle of 90° above horizontal with a speed of 80 m/s.
b. A golf ball is hit at an angle of 80° above horizontal with a speed of 90 m/s.
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- Peter throws a baseball through a houses window. He stands 3.4 m from the window. The ball starts in his hand 1.1m above the ground and goes through the window at a point 2.4 m off the ground. a. Sketch the problem, including an xy coordinate system with the origin on the ground directly below the initial position of the ball, the y axis pointing upward, and the x axis pointing toward the house. b. What are the initial and final coordinates of the ball?A 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/sA student stands at the edge of a cliff and throws a stone horizontally over the edge with a speed of v, = 20.5 m/s. The cliff is h = 53.0 m above a flat, horizontal beach as shown in the figure. y
- IM-5 Jae throws a 0.350kg ball so that it is traveling at 7.50m/s y toward a wall, approaching the wall at an angle of 35.0° as shown in the figure to the right. After hitting the wall, the speed of the ball is still 7.50m/s but its direction has changed and it is now traveling at an angle of 35.0° away from the wall as shown to the right. a) Sketch on your paper a figure like the one shown to the right and show the vectors for the momentum before impact, PB, the momentum after impact, PA, and use them to find Ap, the change in momentum for the ball. Clearly label each vector. b) Calculate the sign and magnitude of Apx. the change in momentum in the x direction. c) Calculate the sign and magnitude of Apy the change in momentum in the y direction. d) If the collision lasts for 0.150 seconds, find the magnitude of the average force on the ball during the collision. What is the direction of the average force on the ball during the collision? Answer this by showing an arrow and label it as…An object is shot 40 m/s at an angle of 50° from the ground. How far away does it land? A. Fill in the x and y variables for the object.A 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?
- A fighter plane moving 233 m/s horizontally fires a projectile with speed 59 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) 249 m/s Ob) 2660 m/s c) 288 m/s d) 286 m/sSofia is playing a game with her friend, Kara, where she throwsM&M candies at Kara and Kara catches the M&M’s in hermouth. They begin standing 1.75 meters apart from eachother. Sofia throws the M&M at an angle of 60 degrees abovethe horizontal with a speed of 4.13 m/s. Kara’s mouth is145 cm above the ground when she catches the M&M. Whatheight above the ground did the M&M leave Sofia’s hand?Hint: Remember, even though the motion in the horizontaldirection is independent of the motion in the vertical direc-tion, they share the same time.14. A baseball player hits the ball at an angle of 15.0° from the horizontal with a velocity of 20.0 m/s. How far will the ball travel in the air? а. 10.24 m 15. A basketball player has thrown the ball at an angle of 30.0° and travels 10.0 m. If the ball is thrown at the same speed, at what other angle will the ball be allowed to travel 10.0 m? a. 40.0 ° 16. A basketball player throws the ball at different angles. At which of the following angles will the ball achieve the maximum height? а. 35.0° b. 20.48 m c. 21.0 m d. 21.5 m b. 50.0 ° c. 60.0 ° d. 70.0 ° b. 45.0° c. 65.0° d. 70.0°
- A cannon at an elevation of 2000 feet above sea level fires a missile upward at an angle of 45 degrees to hit a target on a boat at sea on the far side of a mountain. The missile just barely clears the top of the mountain and hits the target. The cannon is 5 horizontal miles from the top of the mountain. Ignore air resistance. a. Determine the firing velocity of the missile. b. Determine the height of the mountain. c. Determine the total range of the missile (distance from cannon to target)Lili throws a ball to her friend Eric. The ball leaves Lili's hand a distance 2.00 meters above the ground with an initial speed of 18.0 m/s at an angle 30.0° with respect to the horizontal. Eric catches the ball 1.20 meters above the ground. What is the distance between Lili and Eric, in meters? Use g = 10.0 m/s. %3D Your answer needs to have 3 significant figures, include the negative sign in your answer if needed. (No unit is needed in your answer, it is already given in the question statement.)Julie throws a ball to her friend Sarah. The ball leaves Julie's hand a distance 1.5 meters above the ground with an initial speed of 22 m/s at an angle 61 degrees; with respect to the horizontal. Sarah catches the ball 1.5 meters above the ground.After catching the ball, Sarah throws it back to Julie. The ball leaves Sarah's hand a distance 1.5 meters above the ground, and is moving with a speed of 12 m/s when it reaches a maximum height of 23 m above the ground. What is the speed of the ball when it leaves Sarah's hand? How high above the ground will the ball be when it gets to Julie?
