Concept explainers
Animal Athletes
Different animals have very different capacities for running. A horse can maintain a top speed of 20 m/s for a long distance but has a maximum acceleration of only 6.0 m/s2, half what a good human sprinter can achieve with a block to push against. Greyhounds, dogs especially bred for feats of running, have a top speed of 17 m /s, but their acceleration is much greater than that of the horse. Greyhounds are particularly adept at turning corners at a run.
Figure 1.1
A greyhound on a racetrack turns a corner at a constant speed of 15 m/s with an acceleration of 7.1 m/s2. What is the radius of the turn?
A. 40 m
B. 30 m
C. 20 m
D. 10 m
Want to see the full answer?
Check out a sample textbook solutionChapter P Solutions
College Physics: A Strategic Approach (4th Edition)
Additional Science Textbook Solutions
Essential University Physics: Volume 2 (3rd Edition)
Sears And Zemansky's University Physics With Modern Physics
Conceptual Physical Science (6th Edition)
Conceptual Integrated Science
The Cosmic Perspective
Introduction to Electrodynamics
- Two marbles roll off a table top that is 2 meters high. The marbles roll off the table at the same time, but with different speeds. The red marble has a speed of 3 m/s, while the blue marble has a speed of 6 m/s. Which is true? A.The blue marble will strike the ground in less time than the red marble. B.The red marble will strike the ground in less time than the blue marble. C.It is impossible to determine the time the marbles will take to reach the ground unless their mass is known .D.The red and blue marbles will strike the ground at the same time.arrow_forwardA child is playing with a ball on a level surface. She gives the ball a push to get it rolling, then the ball rolls a short distance before coming to a stop. Which of the following explains why the ball slows to a stop? a. the child stopped pushing it b. the speed is proportional to the force c. there must have been some force on the ball opposing the direction of motion d. the net force on the ball was zero, so it wanted to remain stationaryarrow_forwardPart A A 480 g peregrine falcon reaches a speed of 63 m/s in a vertical dive called a stoop. (Figure 1) If we assume that the falcon speeds up under the influence of gravity only, what is the minimum height of the dive needed to achieve this speed? Express your answer with the appropriate units. HẢ 圖] ? h = Value Units Submit Request Answer Provide Feedback Next > Figure 1 of 1arrow_forward
- Scientific Narrative 14 Using your HW Guide as a resource, write a scientific narrative paragraph for the following prompt: How can a ball bouncing up and down be used to describe acceleration?arrow_forward1. There are how many laws of motion?a. 5 b. 2 c. 3 d. 4 2. Which law of motion is also known as Law of Inertia?a. Newton’s 1st Law c. Newton’s 2nd Lawb. Newton’s 3 rd Law d. All of the above 3. When an object at rest velocity and acceleration is zeroa. object starts to move c. object continues to be at motionb. object continues to be at rest d. none of the above 4. Which is the Newton’s3rd Law of motion?a. The rate of change of linear momentum is equal to force acting on the body.b. An object will remain at rest or in uniform motion in a straight line unless acted upon by an external forcec. All forces in the universe occur in equal but oppositely directed pairs.d. None of these. 5. When we kick a ball, force is exerted in _________a. specific direction c. multi forceb. all direction d. none of the abovearrow_forwardWhich of the following is NOT an Aristotle’s concept about motion? * A. Motion can be natural or violent. B. An object will move if an external force is applied. C. The motion of an object is parallel to the ground until it is the object's time to fall back into the ground. D. An object in motion, if unimpeded, will continue to be in motion; an external force is not necessary to maintain the motion. A rock, a crumpled paper, and a rubber ball, with different masses, were dropped simultaneously. Neglecting air resistance, which object will have the greatest acceleration upon reaching the ground? * A. The crumpled paper will have the greatest acceleration. B. The three objects will have the same acceleration. C. The rubber ball will have the greatest acceleration. D. The stone will have the greatest acceleration. The higher the index of refraction of a medium, * A. the higher its critical angle. B. slower…arrow_forward
- You are asked to double the acceleration of a billiard ball (pool ball). Describe how you will have to change the original force to do this. Explain/show how Newton's 2nd law helps you to get the correct answer. Use complete sentences! A. You will have to apply 2 times the original force B. You will have to apply 3 times the original force C. You will have to apply only 1/2 the original force D. It is not necessary to change the original forcearrow_forwardTom the cat is chasing Jerry the mouse across the surface of a table 1.51 m above the floor. Jerry steps out of the way at the last second, and Tom slides off the edge of the table at a speed of 7.31 m/s. What is Tom's speed just before he hits the floor?arrow_forwardI Review I Constants For related problem-solving tips and strategies, you may want to view a Video Tutor Solution of Gravity on mars. Part A At what distance above the surface of the earth is the acceleration due to the earth's gravity 0.595 m/s² if the acceleration due to gravity at the surface has magnitude 9.80 m/s²? Express your answer in meters. ? d = m Submit Request Answerarrow_forward
- I. NEWTON’S LAWS OF MOTION 1. When you are in a train, your body leans backwards as the train starts to move from rest. What Newton’s law of motion does this demonstrate? A. 2nd Law of Motion B. Law of Acceleration C. 1st Law of Motion D. 3rd Law of Motion 2. A shooter experiences a recoil after firing a bullet with a gun. What Newton’s law of motion does this demonstrate? A. 3rd Law of Motion B. Law of Inertia C. 2nd Law of Motion D. 1st Law of Motion 3. The greater the force you apply to an object the greater the change in velocity is per unit of time. What Newton’s law of motion does this demonstrate? A. 1st Law of Motion B. Law of Interaction C. 3rd Law of Motion D. 2nd Law of Motion 4. What will be the new value of an object’s acceleration if we square the original mass of it? A. Acceleration will increase by a factor equals to gravitational acceleration. B. Acceleration will remain the same. C. Acceleration will decrease by a factor equals to mass. D. Acceleration will be…arrow_forwardQuestion Help When a model rocket is launched, the propellant burns for a few seconds, accelerating the rocket upward. After burnout, the rocket coasts upward for a while and then begins to fallA smal explosive charge pops out a parachute shortly after the rocket starts down. The parachute slows the rocket to keep ik from breaking when it lands. The figure here shows the velocity data from the fight of the model rocket. Use the data to complete parts (a) through (g) 200 150 100 50 50 -100 10 Time after launch () 12 (a) How fast was the rocket climbing when the engine stopped? fusec (Round to the nearest integer as needed.) ury vecty earrow_forwardBased on the table in the picture answer the following questions. a. Does height affect the speed of the car? Explain your answer b. What is your conclusion?arrow_forward
- Glencoe Physics: Principles and Problems, Student...PhysicsISBN:9780078807213Author:Paul W. ZitzewitzPublisher:Glencoe/McGraw-HillCollege PhysicsPhysicsISBN:9781285737027Author:Raymond A. Serway, Chris VuillePublisher:Cengage LearningCollege PhysicsPhysicsISBN:9781305952300Author:Raymond A. Serway, Chris VuillePublisher:Cengage Learning
- Physics for Scientists and Engineers, Technology ...PhysicsISBN:9781305116399Author:Raymond A. Serway, John W. JewettPublisher:Cengage LearningPhysics for Scientists and Engineers: Foundations...PhysicsISBN:9781133939146Author:Katz, Debora M.Publisher:Cengage Learning