Concept explainers
A railroad flatcar is traveling to the right at a speed of 13.0 m/s relative to an observer standing on the ground. Someone is riding a motor scooter on the flatcar (Fig. E3.30). What is the velocity (magnitude and direction) of the scooter relative to the flat-car if the scooter’s velocity relative to the observer on the ground is (a) 18.0 m/s to the right? (b) 3.0 m/s to the left? (c) zero?
Figure E3.30
Learn your wayIncludes step-by-step video
Chapter 3 Solutions
University Physics with Modern Physics (14th Edition)
Additional Science Textbook Solutions
Physics: Principles with Applications
Physics for Scientists and Engineers with Modern Physics
College Physics
Essential University Physics: Volume 1 (3rd Edition)
Lecture- Tutorials for Introductory Astronomy
The Cosmic Perspective Fundamentals (2nd Edition)
- Huck Finn walks at a speed of 0.60 m/s across his raft (that is, he walks perpendicular to the raft's motion relative to the shore). The raft is traveling down the Mississippi River at a speed of 1.75 m/s relative to the river bank. What is Huck's velocity (speed and direction) relative to the river bank?arrow_forwardWhile standing at the second floor balcony in an apartment building at 2 meters above the ground, Peter throws a tennis ball upward to Tom, who is standing at the seventh floor balcony at 10 meters above the ground. The velocity with which Peter throws the ball is equal to 13 m/s. Tom fails to catch the ball while it is still moving upward. The ball reaches the highest point in its motion trajectory and falls downward and lands in Tom's hands. What is the velocity magnitude of the ball when Tom catches it?arrow_forwardA space vehicle is coasting at a constant velocity of 19.3 m/s in the +y direction relative to a space station. The pilot of the vehicle fires aRCS (reaction control system) thruster, which causes it to accelerate at 0.337 m/2 in the + direction. After 59.8 s, the pilot shuts off the RCS thruster. After the RCS thruster is turned off, find (a) the magnitude and (b) the direction of the vehicle's velocity relative to the space station. Express the direction as an angle (in degrees) measured from the +y direction.arrow_forward
- A space vehicle is coasting at a constant velocity of 23.7 m/s in the +y direction relative to a space station. The pilot of the vehicle fires a RCS (reaction control system) thruster, which causes it to accelerate at 0.212 m/s2 in the +x direction. After 37.9 s, the pilot shuts off the RCS thruster. After the RCS thruster is turned off, find (a) the magnitude and (b) the direction of the vehicle's velocity relative to the space station. Express the direction as an angle (in degrees) measured from the +y direction.arrow_forwardA football quarterback is moving straight backwards at a speed of 2.9m/s when he throws a pass to a player 22 m straight downfield. The ball is thrown at an angle of 21 degrees relative to the ground and is caught at the same height as it is released. What is magnitude of the initial velocity of the ball relative to the quarterback in m/s? What angle above the horizontal does the initial velocity of the ball relative to the quarterback make? Give your answer in degrees.arrow_forwardA space vehicle is coasting at a constant velocity of 15.4 m/s in the +y direction relative to a space station. The pilot of the vehicle fires a RCS (reaction control system) thruster, which causes it to accelerate at 0.255 m/s² in the +x direction. After 45.7 s, the pilot shuts off the RCS thruster. After the RCS thruster is turned off, find (a) the magnitude and (b) the direction of the vehicle's velocity relative to the space station. Express the direction as an angle (in degrees) measured from the +y direction. (a) Number i (b) Number eTextbook and Media Hint Save for Later Units Units Attempts: 0 of 3 used Submit Answerarrow_forward
- Kayla throws a soccer ball out of her dorm window to Hafsa, who is waiting below to catch it. Kayla throws the ball at an angle of 40° below horizontal with a speed of 1.2 m/s, and Hafsa catches it 2.4 s later. How far from the base of the dorm does Hafsa stand to catch the ball, in meters? Use g = 10.0 m/s2. Your answer needs to have 2 significant figures, including the negative sign in your answer if needed. Do not include the positive sign if the answer is positive. No unit is needed in your answer, it is already given in the question statement.arrow_forwardA space vehicle is coasting at a constant velocity of 24.4 m/s in the +y direction relative to a space station. The pilot of the vehicle fires a RCS (reaction control system) thruster, which causes it to accelerate at 0.223 m/s² in the +x direction. After 52.7 s, the pilot shuts off the RCS thruster. After the RCS thruster is turned off, find (a) the magnitude and (b) the direction of the vehicle's velocity relative to the space station. Express the direction as an angle (in degrees) measured from the +y direction. (a) Number i Units (b) Number Units ûarrow_forwardA space vehicle is coasting at a constant velocity of 24.6 m/s in the +y direction relative to a space station. The pilot of the vehicle fires a RCS (reaction control system) thruster, which causes it to accelerate at 0.201 m/s² in the +x direction. After 47.8 s, the pilot shuts off the RCS thruster. After the RCS thruster is turned off, find (a) the magnitude and (b) the direction of the vehicle's velocity relative to the space station. Express the direction as an angle (in degrees) measured from the +y direction. (a) Number i (b) Number i Units Units +arrow_forward
- A student stands at the edge of a cliff and throws a stone horizontally over the edge with a speed of 18.0 m/s. The cliff is 50.0 m above a flat, horizontal beach, as shown in Figure P3.24. How long after being released does the stone strike the beach below the cliff? With what speed and angle of impact does the stone land?arrow_forwarda student stands at the edge of a cliff and throws a stone horizontally over the edge with a speed of 18.0 m/s. the cliff is 50.0 m above a flat, horizontal beach as shown in figure p3.23. (a) what are the coor- dinates of the initial position of the stone? (b) what are the components of the initial velocity? (c) write the equations for the x- and y-components of the veloc- ity of the stone with time. (d) write the equations for the position of the stone with time, using the coor- dinates in figure p3.23. (e) how long after being released does the stone strike the beach below the cliffe (f) with what speed and angle of impact does the stone land? 23) e) 3.19 secs f) 36.1 m/s 60.1 degrees below the horizontalarrow_forwardDaniel takes his two dogs, Pauli the Pointer and Newton the Newfoundland, out to a field and lets them loose to exercise. Both dogs sprint away in different directions while Daniel stands still. From Daniel's point of view, Newton runs due North at 3.90m/s, but from Pauli's point of view, Newton appears to be moving at 1.50 m/s due East. What must Pauli's velocity relative to Daniel be for this to be true? Express your answer in terms of the ? and ?‑components if North is the +? direction and East is the +? direction. a) ?-component (m/s): ?-component (m/s): b) Express your answer as a magnitude and an angle measured counter‑clockwise from due East.arrow_forward
- College PhysicsPhysicsISBN:9781305952300Author:Raymond A. Serway, Chris VuillePublisher:Cengage LearningUniversity Physics (14th Edition)PhysicsISBN:9780133969290Author:Hugh D. Young, Roger A. FreedmanPublisher:PEARSONIntroduction To Quantum MechanicsPhysicsISBN:9781107189638Author:Griffiths, David J., Schroeter, Darrell F.Publisher:Cambridge University Press
- Physics for Scientists and EngineersPhysicsISBN:9781337553278Author:Raymond A. Serway, John W. JewettPublisher:Cengage LearningLecture- Tutorials for Introductory AstronomyPhysicsISBN:9780321820464Author:Edward E. Prather, Tim P. Slater, Jeff P. Adams, Gina BrissendenPublisher:Addison-WesleyCollege Physics: A Strategic Approach (4th Editio...PhysicsISBN:9780134609034Author:Randall D. Knight (Professor Emeritus), Brian Jones, Stuart FieldPublisher:PEARSON