Physics for Scientists and Engineers, Technology Update (No access codes included)
9th Edition
ISBN: 9781305116399
Author: Raymond A. Serway, John W. Jewett
Publisher: Cengage Learning
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 2, Problem 2.39P
A glider of length ℓ moves through a stationary photogate on an air track. A photogate (Fig. P2.19) is a device that measures the time interval Δtd during which the glider blocks a beam of infrared light passing across the photogate. The ratio vd = ℓ/Δtd is the average velocity of the glider over this part of its motion. Suppose the glider moves with constant acceleration. (a) Argue for or against the idea that vd is equal to the instantaneous velocity of the glider when it is halfway through the photogate in space. (b) Argue for or against the idea that vd is equal to the instantaneous velocity of the glider when it is halfway through the photogate in time.
Figure P2.19
Expert Solution & Answer
Trending nowThis is a popular solution!
Students have asked these similar questions
An object moves in one dimensional motion with constant acceleration a = 4.5 m/s².
At time t = 0 s, the object is at xo = 2.9 m and has an initial velocity of vo = 4 m/s.
How far will the object move before it achieves a velocity of v = 7 m/s?
Your answer should be accurate to the nearest 0.1 m.
An object moves in one dimensional motion with constant acceleration a = 7.4 m/s². At
time t = 0 s, the object is at x = 3.2 m and has an initial velocity of vo = 4 m/s.
How far will the object move before it achieves a velocity of v = 6.6 m/s?
Your answer should be accurate to the nearest 0.1 m.
A thief is trying to escape from a parking garage after completing a robbery, and the thief’s car is speeding (v = 11 m/s) toward the door of the parking garage (Fig. P2.60). When the thief is L = 14 m from the door a police officer flips a switch to close the garage door. The door starts at a height of 7 m and moves downward at 0.3 m/s. If the thief’s car is 1.4 m tall, will the thief escape? (Find the height of the door above the ground).
Chapter 2 Solutions
Physics for Scientists and Engineers, Technology Update (No access codes included)
Ch. 2 - Are officers in the highway patrol more interested...Ch. 2 - Make a velocitytime graph for the car in Figure...Ch. 2 - If a car is traveling eastward and slowing down,...Ch. 2 - Which one of the following statements is true? (a)...Ch. 2 - In Figure 2.12, match each vxt graph on the top...Ch. 2 - Consider the following choices: (a) increases, (b)...Ch. 2 - One drop of oil falls straight down onto the road...Ch. 2 - A racing car starts from rest at t = 0 and reaches...Ch. 2 - A juggler throws a bowling pin straight up in the...Ch. 2 - When applying the equations of kinematics for an...
Ch. 2 - A cannon shell is fired straight up from the...Ch. 2 - An arrow is shot straight up in the air at an...Ch. 2 - When the pilot reverses the propeller in a boat...Ch. 2 - A rock is thrown downward from the top of a...Ch. 2 - A skateboarder starts from rest and moves down a...Ch. 2 - Oil another planet, a marble is released from rest...Ch. 2 - As an object moves along the .v axis, many...Ch. 2 - A pebble is dropped from rest from the lop of a...Ch. 2 - A student at the top of a building of height h...Ch. 2 - Von drop a ball from a window located on an upper...Ch. 2 - A pebble is released from rest at a certain height...Ch. 2 - A ball is thrown straight up in the air. For which...Ch. 2 - A hard rubber ball, not affected by air resistance...Ch. 2 - Each of the strobe photographs (a), (b). and (c)...Ch. 2 - If the average velocity of an object is zero in...Ch. 2 - Try the following experiment away from traffic:...Ch. 2 - Prob. 2.3CQCh. 2 - Prob. 2.4CQCh. 2 - Prob. 2.5CQCh. 2 - You throw a ball vertically upward so that it...Ch. 2 - (a) Can (he equations of kinematics (Eqs....Ch. 2 - (a) Can the velocity of an object at an instant of...Ch. 2 - Two cars are moving in the same direction in...Ch. 2 - Section 2.1 Position, Velocity, and Speed The...Ch. 2 - The speed of a nerve impulse in the human body is...Ch. 2 - A prison walks first al a constant speed of 5.00...Ch. 2 - A particle moves according to the equation x =...Ch. 2 - The position of a pinewood derby car was observed...Ch. 2 - The position of a particle moving along the x axis...Ch. 2 - A positiontime graph for a particle moving along...Ch. 2 - An athlete leaves one end of a pool of length L at...Ch. 2 - Find the instantaneous velocity of the particle...Ch. 2 - Review. The North American and European plates of...Ch. 2 - A hare and a tortoise compete in a race over a...Ch. 2 - A car travels along a straight line at a constant...Ch. 2 - A person takes a trip, driving with a constant...Ch. 2 - Review. A 50.0-g Super Ball traveling al 25.0 m/s...Ch. 2 - A velocity-time graph for an object moving along...Ch. 2 - A child rolls a marble on a bent track that is 100...Ch. 2 - Figure P2.9 shows a graph of vx versus t for the...Ch. 2 - (a) Use the data in Problem 3 to construct a...Ch. 2 - A particle starts from rest and accelerates as...Ch. 2 - An object moves along the x axis according to the...Ch. 2 - A panicle mows along the x axis according to the...Ch. 2 - Draw motion diagrams for (a) an object moving to...Ch. 2 - Each of the strobe photographs (a), (b), and (c)...Ch. 2 - The minimum distance required to stop a car moving...Ch. 2 - An electron in a cathode-ray tube accelerates...Ch. 2 - A speedboat moving at 30.0 m/s approaches a...Ch. 2 - A parcel of air moving in a straight tube with a...Ch. 2 - A truck covers 40.0 m in 8.50 s while smoothly...Ch. 2 - An object moving with uniform acceleration has a...Ch. 2 - In Example 2.7, we investigated a jet landing on...Ch. 2 - Prob. 2.31PCh. 2 - Solve Example 2.8 by a graphical method. On the...Ch. 2 - A truck on a straight road starts from rest,...Ch. 2 - Why is the following situation impossible?...Ch. 2 - The driver of a car slants on the brakes when he...Ch. 2 - Prob. 2.36PCh. 2 - A speedboat travels in a straight line and...Ch. 2 - A particle moves along the x axis. Its position is...Ch. 2 - A glider of length moves through a stationary...Ch. 2 - A glider of length 12.4 cm moves on an air track...Ch. 2 - An object moves with constant acceleration 4.00...Ch. 2 - At t = 0, one toy car is set rolling on a straight...Ch. 2 - Figure P2.43 represents part of the performance...Ch. 2 - A hockey player is standing on his skates on a...Ch. 2 - In Chapter 9, we will define the center of mass of...Ch. 2 - An attacker at the base of a castle wall 3.65 m...Ch. 2 - Why is the following situation impossible? Emily...Ch. 2 - A baseball is hit so that it travels straight...Ch. 2 - It is possible to shoot an arrow at a speed as...Ch. 2 - The height of a helicopter above the ground is...Ch. 2 - Prob. 2.51PCh. 2 - A ball is thrown upward from the ground with an...Ch. 2 - A student throws a set of keys vertically upward...Ch. 2 - At time t = 0, a student throws a set of keys...Ch. 2 - A daring ranch hand sitting on a tree limb wishes...Ch. 2 - A package is dropped at time t = 0 from a...Ch. 2 - Automotive engineers refer to the time rate of...Ch. 2 - A student drives a moped along a straight road as...Ch. 2 - The speed of a bullet as it travels down the...Ch. 2 - A certain automobile manufacturer claims that its...Ch. 2 - The froghopper Philaenus spumarius is supposedly...Ch. 2 - An object is at x = 0 at t = 0 and moves along the...Ch. 2 - Ail inquisitive physics student and mountain...Ch. 2 - In Figure 2.11b, the area under the velocitytime...Ch. 2 - A ball starts from rest and accelerates at 0.5(H)...Ch. 2 - A woman is reported to have fallen 144 ft from the...Ch. 2 - An elevator moves downward in a tall building at a...Ch. 2 - Why is the following situation impossible? A...Ch. 2 - The Acela is an electric train on the...Ch. 2 - Two objects move with initial velocity 8.00 m/s,...Ch. 2 - At t = 0, one athlete in a race running on a long,...Ch. 2 - A catapult launches a test rocket vertically...Ch. 2 - Kathy tests her new sports car by racing with...Ch. 2 - Two students are on a balcony a distance h above...Ch. 2 - Two objects, A and B, are connected by hinges to a...Ch. 2 - Astronauts on a distant planet toss a rock into...Ch. 2 - A motorist drives along a straight road at a...Ch. 2 - A commuter train travels between two downtown...Ch. 2 - Lisa rushes down onto a subway platform to find...Ch. 2 - A hard rubber ball, released at chest height,...Ch. 2 - A blue car of length 4.52 m is moving north on a...Ch. 2 - Review. As soon as a traffic light turns green, a...Ch. 2 - In a womens 100-m race, accelerating uniformly,...Ch. 2 - Two thin rods are fastened to the inside of a...Ch. 2 - A man drops a rock into a well, (a) The man hears...
Additional Science Textbook Solutions
Find more solutions based on key concepts
7. (II) (a) What is the current in the element of an electric clothes dryer with a resistance of 8.6 ?when it i...
Physics: Principles with Applications
Can the observer shown see a star when it is located below the horizon? Why or why not?
Lecture- Tutorials for Introductory Astronomy
Planetary Priorities. Suppose you were in charge of developing and prioritizing future planetary missions for N...
Essential Cosmic Perspective
Choose the best answer to each of the following. Explain your reasoning. If Earth were twice as far as it actua...
The Cosmic Perspective Fundamentals (2nd Edition)
The temperature of the Universe at recombination was about 3000 K. Use Wien’s law to calculate the peak wavelen...
Loose Leaf For Explorations: Introduction To Astronomy
Whether two metal foil leaves an electroscope get opposite charge when the electroscope is charged.
The Physics of Everyday Phenomena
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
- A thief is trying to escape from a parking garage after completing a robbery, and the thief’s car is speeding (v = 12 m/s) toward the door of the parking garage (Fig. P2.60). When the thief is L = 30 m from the door, a police officer flips a switch to close the garage door. The door starts at a height of 2.0 m and moves downward at 0.20 m/s. If the thief’s car is 1.4 m tall, will the thief escape?arrow_forwardA thief is trying to escape from a parking garage after completing a robbery, and the thief's car is speeding (v = 12 m/s) toward the door of the parking garage (Fig. P2.60). When the thief is L= 30 m from the door, a police officer flips a switch to close the garage door. The door starts at a height of 2.0 m and moves downward at 0.20 m/s. If the thief's car is 1.4 m tall, will the thief escape? Garage door L Figure P2.60arrow_forwardPedro is driving a motorcycle along Espana boulevard. His position (in meters) at any given time is given by x(t) = 1.124t2 + 6.022 . Pedro's initial position is m. His position at ten seconds is m. His speed at ten seconds is m/s. His acceleration at ten seconds is m/s2. Marites is also driving her motorcycle along Espana. Her position function is of the form . What is the coefficient if her acceleration at ten seconds is 2.04 m/s2? m/s4arrow_forward
- Gretchen runs the first 4.0 km of a race at 5.0 m/s. Then a stiff wind comes up, so she runs the last 1.0 km at only 4.0 m/s. If she later ran the same course again, what constant speed would let her finish in the same time as in the first race?arrow_forwardIn the children's book Nuts to You, a young squirrel named Jed is snatched up by a hawk. While in the air Jed manages to go limp, slip through the hawk's talons and fall to the forest floor. The hawk travels horizontally at a speed of 4.86m/s . (You may neglect any effects of air resistance as you answer the following questions). One second after being released, what is the y-component of Jed's velocity?arrow_forwardA small block has constant acceleration as it slides down a frictionless incline. The block is released from rest at the top of the incline, and its speed after it has traveled 6.00 mm to the bottom of the incline is 3.80 m/sm/s. A). What is the speed of the block when it is 4.60 mm from the top of the incline? Express your answer with the appropriate units.arrow_forward
- How do I solve part b?arrow_forwardTwo children are playing on a 151-m-tall bridge. One child drops a rock (initial velocity zero) at t = 0. The other waits 1.1 s and then throws a rock downward with an initial speed Vo. If the two rocks hit the ground at the same time, what is vo? m/sarrow_forwardA particle’s velocity is given by the function vx = (6.0 m/s)sin(9.0πt), where t is in s. What is the particle’s acceleration at time after t = 0.0 s, when the particle reaches a turning point?arrow_forward
- At time t = 0, a car moving along the +-axis passes through a = 0 with a constant velocity of magnitude vo. At some time later, t₁, it starts to slow down. The acceleration of the car as a function of time is given by: a 2 (t) = { e(t_t₁) -c(t 0 ≤ t ≤t₁ t₁ < t < t₂ where c is a positive constants in SI units, and t₁ < t ≤ t₂ is the given time interval for which the car is slowing down. The goal of the problem is to find the car's position as a function of time between t₁ < t < t2. Express your answers to the following questions using the following as needed: v_ for vo, t_1 for t₁, c, t. (Part a). What is v (t), the velocity of the car as a function of time during the time interval 0 ≤ t ≤t₁? v (t) = (Part b). What is x (t), the position of the car as a function of time during the time interval 0 ≤ t ≤ t₁? x (t) = (Part c). What is v (t), the velocity of the car as a function of time during the time interval t₁ < tarrow_forwardStarting at x = - 17 m at time t = 0 s, an object takes 17 s to travel 55 m in the +x direction at a constant velocity. On a sheet of paper, make a position vs. time graph of the object's motion. What is its velocity?arrow_forwardA commuter backs her car out of her garage with a constant acceleration of 1.9 m/s2. Assume that her initial motion is in the positive direction. How long does it take her to reach a speed of 2.35 m/s in seconds? If she then brakes to a stop in 0.65 s, what is her acceleration in meters per square second?arrow_forwardarrow_back_iosSEE MORE QUESTIONSarrow_forward_ios
Recommended textbooks for you
Principles of Physics: A Calculus-Based TextPhysicsISBN:9781133104261Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning
Principles of Physics: A Calculus-Based Text
Physics
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
Position/Velocity/Acceleration Part 1: Definitions; Author: Professor Dave explains;https://www.youtube.com/watch?v=4dCrkp8qgLU;License: Standard YouTube License, CC-BY