Concept explainers
You are target shooting using a toy gun that fires a small ball at a speed of 15 m/s. When the gun is fired at an angle of 300above horizontal, the ball hits the bull’s-eye of a target at the same height as the gun. Then the target distance is halved. At what angle must you aim the gun to hit the bull’s-eye in its new position? (Mathematically there are two solutions to this problem: the physically reasonable answer is the smaller of the two.)
Learn your wayIncludes step-by-step video
Chapter 4 Solutions
Physics for Scientists and Engineers: A Strategic Approach, Vol. 1 (Chs 1-21) (4th Edition)
Additional Science Textbook Solutions
Campbell Essential Biology (7th Edition)
Organic Chemistry (8th Edition)
Human Physiology: An Integrated Approach (8th Edition)
Campbell Biology: Concepts & Connections (9th Edition)
Genetic Analysis: An Integrated Approach (3rd Edition)
Microbiology with Diseases by Body System (5th Edition)
- A firefighter, a distance d from a burning building, directs a stream of water from a fire hose at angle i above the horizontal as shown in Figure P3.16. If the initial speed of the stream is vi, at what height h does the water strike the building? Figure P3.16arrow_forwardOur pinoy pride, Kai Sotto, is now training for his upcoming 3x3 basketball tournament next year. Under International Basketball Federation (FIBA) rules, the three-point line is 6.75 meters from the center of the basket. If he will train for three-point shooting, what should be the ball's angle when he shoots the ball if he will try to shoot from a height as high as the basket with an initial velocity of 8.2 m/s? Is it 40°; 50°; 60°? How long would it take for the ball to reach the ring for each of the angles? What is the ball's maximum height for each of the angles? And how fast is the ball's horizontal and vertical initial velocities for each or the angles?arrow_forwardA mortar gun, with a maximum range of 20 m on level ground, is placed on the edge of a vertical cliff of height 10 m overlooking a horizontal plane, as illustrated in the following figure. 20 m (a) Consider the sub-problem of the mortar gun on level ground with maximum range of 20 m. Show that the flight time for the projectile on level ground is V2 vo Hint: The angle required to obtain maximum range is 0 = T/4.arrow_forward
- For a forensics experiment, a student decides to measure the muzzle velocity of the pellets from his BB gun. She points the gun horizontally. On a vertical wall a distance 47.3 m away from the gun, a target is placed. The shots hit the target a vertical distance 0.10 m below the gun's barrel. What is the initial speed of the pellets? Your Answer: units Answerarrow_forwardA frat boy throws a ping pong ball from 0.6 m above a table at 5 m/s and wants to land it in a 20 cm cup 1 m away along the table. At what angle above the horizontal should he throw it?arrow_forwardYou've told your friends and family that despite circumstances you are getting plenty of exercise by practicing basketball alone or with social distancing. In actuality you are merely throwing wadded paper toward the trash can while binging Netflix . The paper wad leaves your hand yo= 1.92 meters above the floor traveling at an angle 8 = 19.8 degrees above the horizontal. It lands exactly in the middle of the track can (Ytrash 1.16 meters high and Xtrash = 4.85 meters away). THROW Yo Calculate all the following: Vo=? 6 The initial velocity, vo, of the paper wad? The time it was in the air? seconds Xtrash meters/second Ytrasharrow_forward
- William Tell must split the apple atop his son's head from a distance of 21 mm . When William aims directly at the apple, the arrow is horizontal. At what angle must he aim it to hit the apple if the arrow travels at a speed of 38 m/sm/s ?arrow_forwardA projectile is launched horizontally from a 20-m tall edifice with a vox of 25 m/s. What is the velocity of the projectile along the x axis right before hitting the ground?arrow_forwardConsider a projectile being launched with an initial speed of 58 m/s at a variety of initial angles. What is the range, in meters, of the projectile if it is launched at an angle of θ1 = 78.3°?arrow_forward
- A projectile is launched at an angle of 45 degrees with respect to the horizontal ground. What is the range of the projectile if it was launched at a speed of 180 ft/s?arrow_forwardAn artillery piece is on the edge of a cliff. This has a height of 12 meters. A vehicle is approaching at a constant velocity of 30 m/s. If the velocity of the projectiles is 700 m/s. What is the firing angle if you want to hit the vehicle when it is 200 meters from the cliff?arrow_forwardConsider a projectile being launched with an initial speed of 43 m/s at a variety of initial angles. Refer to the figure. What is the range, in meters, of the projectile if it is launched at an angle of θ1 = 79.7°? What is the range, in meters, of the projectile if it is launched at an angle of θ2 = 40.5°? What is the range, in meters, of the projectile if it is launched at an angle of θ3 = 90 − 79.7°, the complement of θ1?arrow_forward
- Principles of Physics: A Calculus-Based TextPhysicsISBN:9781133104261Author:Raymond A. Serway, John W. JewettPublisher:Cengage LearningUniversity Physics Volume 1PhysicsISBN:9781938168277Author:William Moebs, Samuel J. Ling, Jeff SannyPublisher:OpenStax - Rice University