College Physics (10th Edition)
10th Edition
ISBN: 9780321902788
Author: Hugh D. Young, Philip W. Adams, Raymond Joseph Chastain
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Textbook Question
Chapter 2, Problem 15P
|| A mouse travels along a straight line; its distance x from the origin at any time t is given by the equation x = (8.5 cm·s−1)t − (2.5 cm·s−2)t2. Find the average velocity of the mouse in the interval from t = 0 to t = 1.0 s and in the interval from t = 0 to t = 4.0 s.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
A rabbit is moving in the positive x - direction at 2.00 m/swhen it spots a predator and accelerates to a velocity of12.0 m/s along the negative y - axis, all in 1.50 s. Determine(a) the x - component and (b) the y - component of the rabbit’sacceleration.
1. The president's airplane, Air Force One, flies at 250 m/s to the
east with respect to the air. The air is moving at 35 m/s to the
north with respect to the ground. Find the velocity of Air Force
One with respect to the ground.
252 m/s
c. 222 m/s
b. 435 m/s
d. 125 m/s
2.A motorboat, which has a speed of 5 meters per second in still
water, is headed east as it crosses a river flowing south at 3.3
meters per second. What is the magnitude of the boat's
resultant velocity with respect to the starting point?
C. 5 m/s
b. 6 m/s
d. 8.3 m/s
a. 3.3 m/s
3. A person observes a fireworks display from a safe distance of
0.750 kilometer. Assuming that sound travels at 340 meters per
second in air, what is the time between the person seeing and
hearing a fireworks explosion?
a. 0.453 S
c. 2.21 s
b..410 s
d. 255,000 S
4. A child walks 5 meters north, then 4 meters east, and finally 2
meters south. What is the magnitude of the resultant
displacement of the child after the entire walk?
a. 1 m
c. 5 m
b.…
In a boat race, boat A is leading boat B by 50 meters and both boats are traveling at a constant speed of 180 km/h. At time = 0, the boats accelerate at constant rates. Knowing that when B passes A, time = 8 seconds and acceleration= 225 km/h determine (a) the acceleration of A in meters per second square, (b) the acceleration of B in meters per second square.
Chapter 2 Solutions
College Physics (10th Edition)
Ch. 2 - A jogger runs due east along a straight jogging...Ch. 2 - Give an example or two in which the magnitude of...Ch. 2 - Under what conditions is average velocity equal to...Ch. 2 - If an automobile is traveling north, can it have...Ch. 2 - True or false? (a) If an objects average speed is...Ch. 2 - Is it possible for an object to be accelerating...Ch. 2 - A wind-up toy car is released from rest. It...Ch. 2 - Can an object with constant acceleration reverse...Ch. 2 - If the graph of the position of an object as a...Ch. 2 - If the graph of the position of an object as a...
Ch. 2 - If the graph of the velocity of an object as a...Ch. 2 - Figure 2.31 shows graphs of the positions of three...Ch. 2 - Figure 2.32 shows graphs of the velocities of...Ch. 2 - Figure 2.33 shows the graph of an objects position...Ch. 2 - Figure 2.3 shows the graph of an objects velocity...Ch. 2 - Figure 2.35 shows the position x of an object as a...Ch. 2 - Figure 2.36 shows the velocity of an object Ux as...Ch. 2 - A ball is dropped from rest from the top of a...Ch. 2 - Which of the following statements about average...Ch. 2 - A ball is thrown directly upward with a velocity...Ch. 2 - Two objects start at the same place at the same...Ch. 2 - An object starts from rest and accelerates...Ch. 2 - If a car moving at 80 mi/h takes 400 ft to stop...Ch. 2 - Figure 2.38 shows the velocity of a jogger as a...Ch. 2 - A certain airport runway of length L allows planes...Ch. 2 - A ball rolls off a horizontal shelf a height h...Ch. 2 - A frog leaps vertically into the air and...Ch. 2 - A cat runs in a straight line. Figure 2.39 shows a...Ch. 2 - A wildebeest is running in a straight line, which...Ch. 2 - A bullet is dropped into a river from a very high...Ch. 2 - An ant is crawling along a straight wire, which we...Ch. 2 - || A person is walking briskly in a straight line,...Ch. 2 - A dog runs from points A to B to C in 3.0 s. (See...Ch. 2 - || BIO Figure 2.44 shows the position of a moving...Ch. 2 - || An object moves along the x axis. Figure 2.45...Ch. 2 - || A boulder starting from rest rolls down a hill...Ch. 2 - || Each graph in Figure 2.47 shows the position of...Ch. 2 - Family trip. You and your family take a trip to...Ch. 2 - Hypersonic scramjet. On March 27, 2004, the United...Ch. 2 - Plate tectonics. The earths crust is broken up...Ch. 2 - A runner covers one lap of a circular track 40.0 m...Ch. 2 - At room temperature, sound travels at a speed of...Ch. 2 - BIO Ouch! Nerve impulses travel at different...Ch. 2 - While riding on a bus traveling down the highway,...Ch. 2 - || A mouse travels along a straight line; its...Ch. 2 - || The freeway blues! When you normally drive the...Ch. 2 - ||Two runners start simultaneously at opposite...Ch. 2 - || A physics professor leaves her house and walks...Ch. 2 - || A test car travels in a straight line along the...Ch. 2 - || Figure 2.50 shows the position x of a crawling...Ch. 2 - || The graph in Figure 2.51 shows the velocity of...Ch. 2 - || DATA A test driver at Incredible Motors, Inc.,...Ch. 2 - (a) The pilot of a jet fighter will black out at...Ch. 2 - || For each graph of velocity as a function of...Ch. 2 - || A little cat, Bella, walks along a straight...Ch. 2 - The driver of a car traveling on the highway...Ch. 2 - BIO Animal motion. Cheetahs, the fastest of the...Ch. 2 - || BIO A cat drops from a shelf 4.0 ft above the...Ch. 2 - || BIO Blackout? A jet fighter pilot wishes to...Ch. 2 - A car is traveling at 60 mi/h down a highway. (a)...Ch. 2 - BIO If a pilot accelerates at more than 4g, he...Ch. 2 - || BIO Air-bag injuries. During an auto accident,...Ch. 2 - Starting from rest, a boulder rolls down a hill...Ch. 2 - Faster than a speeding bullet! The Beretta Model...Ch. 2 - Electric drag racer. An electric drag racer is...Ch. 2 - The reaction time of the average automobile driver...Ch. 2 - According to recent typical test data, a Ford...Ch. 2 - A car sitting at a red light begins to accelerate...Ch. 2 - If the radius of a circle of area A and...Ch. 2 - In the redesign of a machine, a metal cubical part...Ch. 2 - You have two cylindrical tanks. The tank with the...Ch. 2 - Prob. 42PCh. 2 - Two rockets having the same acceleration start...Ch. 2 - The drivers of two cars having equal speeds hit...Ch. 2 - Two bicyclists start a sprint from rest, each...Ch. 2 - (a) If a flea can jump straight up to a height of...Ch. 2 - A brick is released with no initial speed from the...Ch. 2 - Worlds tallest building. Suppose that you drop a...Ch. 2 - A tennis ball on Mars, where the acceleration due...Ch. 2 - Measuring g. One way to measure g on another...Ch. 2 - Thats a lot of hot air! A hot-air balloonist,...Ch. 2 - Astronauts on the moon. Astronauts on our moon...Ch. 2 - A student throws a water balloon vertically...Ch. 2 - A rock is thrown vertically upward with a speed of...Ch. 2 - BIO Physiological effects of large acceleration....Ch. 2 - Two stones are thrown vertically upward from the...Ch. 2 - Two coconuts fall freely from rest at the same...Ch. 2 - A Toyota Prius driving north at 65 mi/h and a VW...Ch. 2 - You are driving eastbound on the interstate at 70...Ch. 2 - A helicopter 8.50 m above the ground and...Ch. 2 - || A jetliner has a cruising air speed of 600 mi/h...Ch. 2 - || At the instant the traffic light turns green,...Ch. 2 - || A state trooper is traveling down the...Ch. 2 - Two rocks are thrown directly upward with the same...Ch. 2 - BIO Prevention of hip fractures. Falls resulting...Ch. 2 - || Egg drop. You are on the roof of the physics...Ch. 2 - || Galileos marbles. Galileo used marbles rolling...Ch. 2 - A large boulder is ejected vertically upward from...Ch. 2 - A car is traveling in the negative x direction at...Ch. 2 - Bio A healthy heart pumping at a rate of 72 beats...Ch. 2 - A car in the northbound lane s sitting at a red...Ch. 2 - A rocket blasts off vertically from rest on the...Ch. 2 - BIO An elite human sorinter reaches his top speed...Ch. 2 - || How high is the cliff? Suppose you are climbing...Ch. 2 - BIO Blood flow in the heart. The human circulatory...Ch. 2 - BIO Blood flow in the heart. The human circulatory...Ch. 2 - BIO Blood flow in the heart. The human circulatory...
Additional Science Textbook Solutions
Find more solutions based on key concepts
10. A 0.10-kg apple falls on Earth, whose mass is about kg. Which is true of the gravitational force that Earth...
College Physics
Where (in the southern sky, on the eastern horizon, on the western horizon, high in the sky, etc.) would you l...
Lecture- Tutorials for Introductory Astronomy
Q27.12 Each of the lettered points at the corners of the cube in Fig. Q27.12 represents a positive charge q mov...
University Physics (14th Edition)
Explain all answers clearly, with complete sentences and proper essay structure if needed. An asterisk (*) desi...
The Cosmic Perspective Fundamentals (2nd Edition)
A conducting sphere of radius a is surrounded by a concentric spherical shell of radius b. Both are initially u...
Essential University Physics (3rd Edition)
45. Find the change in the force of gravity between two planets when their distance apart is decreased by a fac...
Conceptual Physical Science (6th Edition)
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.Similar questions
- The speed of a bullet as it travels down the barrel of a rifle toward the opening is given byv 5 (25.00 3 107)t 2 1 (3.00 3 105)twhere v is in meters per second and t is in seconds. The acceleration of the bullet just as it leaves the barrel is zero. (a) Determine the acceleration and position of the bullet as functions of time when the bullet is in the barrel. (b) Determine the time interval over which the bullet is accelerated. (c) Find the speed at which the bullet leaves the barrel. (d) What is the length of the barrel?arrow_forwardA hiker walks 2.00 km north and then 3.00km east, all in 2.50 hours. Calculate the magnitude and direction of the hiker's (a) Displacement (in km) and(b) Average velocity (in km/h) during those 2.50hours. (c) What was her average speed during the same time interval?arrow_forwardA projectile is fired in the air from a height of 125 feet. Its velocity (in feet per second) t seconds after launch is f(t), given in the following table. x 0 5 10 15 20 25 30 f(x) 230 211 196 167 155 122 108 a) How fast is the projectile traveling 15 seconds after launch? b) How far does the projectile move between 5 seconds and 25 seconds? c) How far does the projectile move between 0 seconds and 15 seconds? d) How high is the projectile at 25 seconds? It isarrow_forward
- Initially (at time t = 0) a particle is moving vertically at 6.9 m/s and horizontally at 0 m/s. Its horizontal acceleration is 1.1 m/s2 . At what time will the particle be traveling at 46◦ with respect to the horizontal? The acceleration due to gravity is 9.8 m/s2 . Answer in units of s.arrow_forwardAn unsuspecting bird is coasting along in an easterly direction at 4.00 mph when a strong wind from the south imparts a constant acceleration of 0.200 m/s2 . If the wind's acceleration lasts for 3.10 s , find the magnitude ?r and direction ?θ (measured counterclockwise from the easterly direction) of the bird's displacement over this time interval. Assume that the bird is originally travelling in the +?+x direction and that there are 1609 m in 1 mi . ?= ? ?= ? Now, assume the same bird is moving along again at 4.00 mph in an easterly direction, but this time, the acceleration given by the wind is at a ϕ=39.0° angle to the original direction of motion, measured counterclockwise from the easterly direction. If the magnitude of the acceleration is 0.500 m/s2 , find the displacement vector ?⃗ r→ and the angle of the displacement ?1θ1 . Enter the components of the vector, ??rx and ??ry , and the angle. Assume the time interval is still 3.10 s . ?⃗ =???̂ +???̂arrow_forwardQuestion 1: What would be the relative velocity of a man swimming against a flowing river if the river flows at a rate of 3.0 m/s and the man 5.0 m/s in still water? Question 2: A car accelerates from rest at a constant rate of 2.0 m/s^2 for 5.0 s. What is the speed of the car at that time?arrow_forward
- An object’s position is given by x = bt + ct3 , x in meters, t in seconds, b = 1.50 m/s and c = 0.640 m/s3 . To study the limiting process leading to the instantaneous velocity, calculate the object’s average velocity over time intervals from (a) 1.00 s to 3.00 s, (b) 1.50 s to 2.50 s, and (c) 1.95 s to 2.05 s. (d) Find the instantaneous velocity as a function of time by differentiating, and compare its value at 2.00 s with your average velocities.arrow_forwardA ball is thrown into the air by a baby alien on a planet in thesystem of Alpha Centauri with a velocity of 49 ft/s. Its heightin feet after t seconds is given by y = 49t −25t2.a.) Find the average velocity for the time period beginningwhen t0 = 1 second and lasting for the given time.t = .01 sec:t = .005 sec:t = .002 sec :t = .001 sec: b.) Estimate the instanteneous velocity when t = 1.arrow_forwardThe average speed of a vehicle on a stretch of Route 134 between 6 A.M. and 10 A.M. on a typical weekday is approximated by the function f(t) = 30t − 60√t + 70 (0 ≤ t ≤ 4) where f (t) is measured in miles per hour, and t is measured in hours, with t = 0 corresponding to 6 A.M. At what time of the morning commute is the traffic moving at the slowest rate? _ A.M. What is the average speed of a vehicle at that time? _ mpharrow_forward
- You are on the roof of a Physics Building, 51 m above the ground. Your physics professor, who is 1.79 m tall, is approaching the building at constant speed of 1.23 m/s. If you wish to drop an egg on his head, how far should your professor be when you release the egg? do not round offarrow_forwardYou are on the roof of a Physics Building, 21 m above the ground. Your physics professor, who is 1.71 m tall, is approaching the building at constant speed of 2.04 m/s. If you wish to drop an egg on his head, how far should your professor be when you release the egg?arrow_forwardAn object moves horizontally according to the equation x = 3t^3 − 5t + 7, where x is meters and t in seconds. (a) Determine the average velocity in the time interval of 2.00 s to 4.00 s. (b) Find the instantaneous velocity at t = 3.60 s. (c) Find the instantaneous acceleration at t = 4.00 s.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- College PhysicsPhysicsISBN:9781305952300Author:Raymond A. Serway, Chris VuillePublisher:Cengage Learning
College Physics
Physics
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Cengage Learning
Kinematics Part 3: Projectile Motion; Author: Professor Dave explains;https://www.youtube.com/watch?v=aY8z2qO44WA;License: Standard YouTube License, CC-BY