Concept explainers
A sailor drops a pair of binoculars from the “crow’s nest” at the top of a sailing ship’s mast. When the ship is at rest, the binoculars land at the base of the mast. If the ship is moving forward with constant velocity, and air resistance can be ignored, do the binoculars land in front of the mast (toward the front of the ship), at the base of the mast, or behind the mast (toward the rear of the ship)? Explain.
Want to see the full answer?
Check out a sample textbook solutionChapter 4 Solutions
EBK PHYSICS
Additional Science Textbook Solutions
Organic Chemistry (8th Edition)
Laboratory Experiments in Microbiology (12th Edition) (What's New in Microbiology)
Cosmic Perspective Fundamentals
Campbell Biology (11th Edition)
Applications and Investigations in Earth Science (9th Edition)
Chemistry: An Introduction to General, Organic, and Biological Chemistry (13th Edition)
- An archer fish spies a meal of a grasshopper sitting on a long stalk of grass at the edge of the pond in which he is swimming. The fish is to successfully spit at and strike the grasshopper, which is 0.200 m away horizontally and 0.335 m above his mouth. What angle (in degrees) above the horizontal must he spit?arrow_forwardA projectile is fired vertically from point A with an initial speed of 205 ft/sec. Relative to an observer located at B, at what times (find two times t, < t2) will the line of sight to the projectile make an angle of 38° with the horizontal? Compute the magnitude of the speed of the projectile at each time, and ignore the effect of aerodynamic drag on the projectile. 205 ft/sec B 380 475'arrow_forwarda rescue plane flies at 198 km/h (= 55.0 m/s) and constant height h = 500 m toward a point directly over a victim, where a rescue capsule is to land. (a) What should be the angle f of the pilot’s line of sight to the victim when the capsule release is made?arrow_forward
- A submarine dives from the water surface at an angle of 30° below the horizontal, following a straight path 50 m long. How far is the submarine then below the water surface? (a) 50 m (b) (50 m)/sin 30° (c) (50 m) sin 30° (d) (50 m) cos 30° (e) none of those answers.arrow_forwardA helicopter flies 78.0 m above the ground at 208 km/h horizontally and attempts to drop a package from rest, relative to the helicopter’s frame of reference, into an open (convertible) car that’s traveling at 156 km/h. (a) At what angle θ, as shown below, should the car be in her line of sight when the package is released? (b) At what angle does the package land in the car?Can you solve this with a detailed explanationarrow_forwardA projectile is fired vertically from point A with an initial speed of 215 ft/sec. Relative to an observer located at B, at what times (find two times t₁arrow_forwardA projectile with a muzzle velocity of 550 m/s is fired from a gun on top of a cliff 460 m above the sea level at a certain angle with respect to the horizontal. If the projectile hits the ocean surface 50 sec after being fired, determine the horizontal range of the projectil.arrow_forwardAs part of a department store display, a model train D runs on a slight incline between the store’s up and down escalators. When the train and shoppers pass point A, the train appears to a shopper on the up escalator B to move downward at an angle of 22° with the horizontal, and to a shopper on the down escalator C to move upward at an angle of 23° with the horizontal and to travel to the left. Knowing that the speed of the escalators is 3 ft/s, determine the speed and the direction of the train.arrow_forwardIn tennis, one of the primary ways to win a point is by making the ball bounce twice on your opponent's side of the court. A tennis player hits a ball at a velocity of 50 m/s at a 0 degree angle from 1m high. When the ball bounces it reflects its velocity angle perfectly and loses 30% of its speed. How long does the other player have to return the ball before the second bounce?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_forwardSuppose that you are designing a mortar to launch a rescue line from coast guard vessels to ships in distress. The light line is attached to a weight fired by the mortar. Neglect aerodynamic drag and the weight of the line for your preliminary analysis. If you want the line to be able to reach a ship 300 ft away when the mortar is fired at 45degrees above the horizontal, what muzzle velocity is required? What maximum height above the point from which it was fired is reached by the weight?arrow_forwardA fire hose held near the ground shoots water at a speed of 5.9 m/sm/s. At what angle(s) should the nozzle point in order that the water land 2.5 mm away? Express your answer(s) in degrees to two significant figures. If there is more than one answer, separate them by a comma.arrow_forwardarrow_back_iosSEE MORE QUESTIONSarrow_forward_ios
- University Physics Volume 1PhysicsISBN:9781938168277Author:William Moebs, Samuel J. Ling, Jeff SannyPublisher:OpenStax - Rice UniversityPrinciples of Physics: A Calculus-Based TextPhysicsISBN:9781133104261Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning