Concept explainers
Two objects, A and B, are launched horizontally, as indicated in Figure 4-8. The horizontal distance covered before landing is smaller for object A than for object B. (a) Is the initial speed of object A greater than, less than, or equal to the initial speed of object B? Explain. (b) Is the amount of time object A is in the air greater than less than or equal to the time object B is in the air? Explain.
Figure 4-8 Enhance Your Understanding 3
Want to see the full answer?
Check out a sample textbook solutionChapter 4 Solutions
EBK PHYSICS
Additional Science Textbook Solutions
Applications and Investigations in Earth Science (9th Edition)
Anatomy & Physiology (6th Edition)
Chemistry: An Introduction to General, Organic, and Biological Chemistry (13th Edition)
Cosmic Perspective Fundamentals
Human Biology: Concepts and Current Issues (8th Edition)
Human Physiology: An Integrated Approach (8th Edition)
- A student at the top of a building of height h throws one ball upward with a speed of vi and then throws a second ball downward with the same initial speed vi. Just before it reaches the ground, is the final speed of the ball thrown upward (a) larger, (b) smaller, or (c) the same in magnitude, compared with the final speed of the ball thrown downward?arrow_forwardA ball is thrown with an initial speed i at an angle i with the horizontal. The horizontal range of the ball is R. and the ball reaches a maximum height R/6. In terms of R and g, find (a) the time interval during which the ball is in motion, (b) the balls speed at the peak of its path, (c) the initial vertical component of its velocity, (d) its initial speed, and (e) the angle i, (f) Suppose the ball is thrown at the same initial speed found in (d) but at the angle appropriate for reaching the greatest height that it can. Find this height. (g) Suppose the ball is thrown at the same initial speed but at the angle for greatest possible range. Find this maximum horizontal range.arrow_forwardA projectile is launched on the Earth with a certain initial velocity and moves without air resistance. Another projectile is launched with the same initial velocity on the Moon, where the acceleration due to gravity is one-sixth as large. How does the range of the projectile on the Moon compare with that of the projectile on the Earth? (a) It is one-sixth as large. (b) It is the same. (c) It is 6 times larger. (d) It is 6 times larger. (e) It is 36 times larger.arrow_forward
- A person standing at the top of a hemispherical rock of radius R kicks a ball (initially at rest on the top of the rock) to give it horizontal velocity vi as shown in Figure P3.56. (a) What must be its minimum initial speed if the ball is never to hit the rock after it is kicked? (b) With this initial speed, how far from the base of the rock does the ball hit the ground?arrow_forwardA canon is located on the edge of a cliff overlooking the sea as shown below. The cannon is 45 m above sea level. The canon ball is fired at an angle of 60° from the horizontal with an initial speed of 50 m/s. Air resistance may be ignored. i) What horizontal distance (in m) will it travel before it falls into the sea? answer = 390marrow_forwardDuring Shaun White's Gold medal run he reached a peak height of 5.6 meters above the halfpipe. If his takeoff angle was 65 degrees above the horizontal and he landed 1.4 meters lower than when he left the halfpipe answer the following questions. 1-What was the magnitude of his initial resultant velocity? 2-How long was he in the air? 3-How far did he travel horizontally down the halfpipe (assume that his horizontal velocity is directed down the halfpipe)?arrow_forward
- A brick is thrown upward from the top of a building at an angle of 15° to the horizontal and with an initial speed of 12 m/s. If the brick is in flight for 3.3 s, how tall is the building? marrow_forwardSuppose you want to throw a ball off the roof of a building. Assuming you throw the ball with the same initial speed regardless of the direction you throw it, how should you throw it such that it hits the ground with the highest speed? Neglect air resistance and assume the ground is horizontal. Should you throw the ball horizontal, or direct it upwards, or thrown the ball straight down the side of the building? Explain your reasoning?arrow_forwardAn alaskan rescue plane drops a supply box to some stranded gold miners. The plane has a horizontal velocity of 100.0 m/s and is at a height of 75 m when it drops the box. What is the final velocity of the box as it hits the ground? How far horizontally did the box travel before hitting the ground? A) Final box velocity B) Horizontal travel of boxarrow_forward
- Problem 1 A cannonball is fired from the roof of a house, which is 3.5 m above ground level. The ball exits the cannon with a speed of 170 m/s at an angle of 35 degrees above the horizontal. Assume the ball travels over flat ground. a) What is the total time that the cannonball is in the air? b) What horizontal distance does the cannonball travel before landing? c) What maximum height above the ground does the cannonball reach? d) What is the acceleration of the cannonball throughout the motion?arrow_forwardFor all questions, assume concepts such as friction or air resistance are negligible, unless stated otherwise in the question. A ball is launched from ground level at an angle of 60˚ and with a speed of 15 m/s. a)What is the maximum height the ball will reach? b)How far horizontally will the ball travel before returning to ground level?arrow_forwardConsider two objects that are thrown upwards at an angle (0 = 35°) above the horizontal. Object 1 is thrown with an initial speed (v1 = 10 m/s). Object 2 is thrown with an initial speed (v2 = 15 m/s). a) Find the difference between the maximum heights of the two objects. b) Find the time between when object 1 hits the ground and when object 2 hits the ground. c) Find the distance between the locations where the two objects hit the ground.arrow_forward
- Principles of Physics: A Calculus-Based TextPhysicsISBN:9781133104261Author:Raymond A. Serway, John W. JewettPublisher:Cengage LearningPhysics for Scientists and Engineers, Technology ...PhysicsISBN:9781305116399Author:Raymond A. Serway, John W. JewettPublisher:Cengage LearningGlencoe Physics: Principles and Problems, Student...PhysicsISBN:9780078807213Author:Paul W. ZitzewitzPublisher:Glencoe/McGraw-Hill