Skip to main content
Ch. 02 - Describing Motion: Kinematics in One Dimension
Giancoli Douglas - Physics for Scientists and Engineers 5th edition
Giancoli Douglas5th editionPhysics for Scientists and EngineersISBN: 9780137488179Non è quello che usi tu?Cambia libro di testo
Tutti i libri di testoGiancoli Douglas 5th editionCh. 02 - Describing Motion: Kinematics in One DimensionProblema 30b
Capitolo 2, Problema 30b

Figure 2–42 shows the velocity of a train as a function of time. During what periods, if any, was the velocity constant?
Graph showing a train's velocity over time, indicating periods of constant velocity and changes in acceleration.

Guida verificata passo dopo passo
1
Examine the velocity vs. time graph provided in the problem. A constant velocity corresponds to a horizontal line on the graph, where the slope of the line is zero.
Identify the time intervals on the graph where the slope of the velocity curve is zero. These intervals represent periods during which the velocity does not change with time.
Note that during these intervals, the train is neither accelerating nor decelerating, as the acceleration (rate of change of velocity) is zero.
Mark the specific time periods (e.g., t1 to t2) on the graph where the velocity remains constant. These are the flat, horizontal segments of the graph.
Summarize the identified time intervals as the periods during which the velocity of the train was constant, based on the graph's visual representation.

Risposta video verificata per un problema simile:

Questa soluzione video è stata consigliata dai nostri tutor come utile per risolvere questo problema.

Concetti chiave

Ecco i concetti essenziali che devi comprendere per rispondere correttamente alla domanda.

Velocity

Velocity is a vector quantity that refers to the rate at which an object changes its position. It is defined as the displacement of the object divided by the time taken for that displacement. In the context of the question, understanding velocity is crucial to determine when it remains constant, which is indicated by a horizontal line on a velocity vs. time graph.
Video consigliato:
Percorso guidato
7:27
Escape Velocity

Constant Velocity

Constant velocity occurs when an object moves at a uniform speed in a straight line, meaning there is no change in speed or direction over time. On a velocity vs. time graph, this is represented by a flat, horizontal line. Identifying periods of constant velocity in the graph is essential for answering the question accurately.
Video consigliato:
Percorso guidato
08:59
Phase Constant of a Wave Function

Graph Interpretation

Graph interpretation involves analyzing graphical data to extract meaningful information. In this case, it requires understanding how to read a velocity vs. time graph to identify sections where the velocity remains unchanged. This skill is vital for determining the specific time intervals during which the train's velocity is constant.
Video consigliato:
Percorso guidato
07:32
Graphing Position, Velocity, and Acceleration Graphs
Pratica correlata
Domanda del libro di testo

Figure 2–42 shows the velocity of a train as a function of time. At what time was its velocity greatest?

1216
views
Domanda del libro di testo

A baseball pitcher throws a baseball with a speed of 43 m/s. Estimate the average acceleration of the ball during the throwing motion. In throwing the baseball, the pitcher accelerates it through a displacement of about 3.5 m, from behind the body to the point where it is released (Fig. 2–44).

<IMAGE>

1556
views
Domanda del libro di testo

The position of an object is given by 𝓍 = At + Bt², where 𝓍 is in meters and t is in seconds. What are the units of A and B?

1486
views
Domanda del libro di testo

A car traveling 85 km/h slows down at a constant 0.50 m/s² just by 'letting up on the gas.' Calculate the distance it travels during the first and fifth seconds.

1745
views
Domanda del libro di testo

A bowling ball traveling with constant speed hits the pins at the end of a bowling lane 16.5 m long. The bowler hears the sound of the ball hitting the pins 2.75 s after the ball is released from his hands. What is the speed of the ball, assuming the speed of sound is 340 m/s?

1787
views
Domanda del libro di testo

Figure 2–42 shows the velocity of a train as a function of time. During what periods, if any, was the acceleration constant?

1895
views