7. Which is true for both uniform velocity and uniform acceleration as depicted by velocity-time graphs? a) The velocity -time graphs for both uniform velocity and uniform acceleration are always straight lines. b) The velocity -time graphs for both uniform velocity and uniform acceleration are always parallel to the x-axis c) The velocity -time graphs for both uniform velocity and uniform acceleration are always parallel to the y-axis d) The velocity -time graphs for both uniform velocity and uniform acceleration are always

7. Which is true for both uniform velocity and uniform acceleration as depicted by velocity-time graphs? a) The velocity -time graphs for both uniform velocity and uniform acceleration are always straight lines. b) The velocity -time graphs for both uniform velocity and uniform acceleration are always parallel to the x-axis c) The velocity -time graphs for both uniform velocity and uniform acceleration are always parallel to the y-axis d) The velocity -time graphs for both uniform velocity and uniform acceleration are always

Physics for Scientists and Engineers, Technology Update (No access codes included)

9th Edition

ISBN:9781305116399

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter2: Motion In One Dimension

Section: Chapter Questions

Problem 2.37P: A speedboat travels in a straight line and increases in speed uniformly from i = 20.0 m/s to f =...

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Consider the following combinations of signs and values for the velocity and acceleration of a particle with respect to a one-dimensional x-axis: Velocity Acceleration a. Positive Positive b. Positive Negative c. Positive Zero d. Negative Positive e. Negative Negative f. Negative Zero g. Zero Positive h. Zero Negative Describe what the particle is doing in each case and give a real-life example for an automobile on an east-west one-dimensional axis, with east considered the positive direction.
Draw motion diagrams for (a) an object moving to the right at constant speed, (b) an object moving to the right and speeding up at a constant rate, (c) an object moving to the right and slowing down at a constant rate, (d) an object moving to the left and speeding up at a constant rate, and (e) an object moving to the left and slowing down at a constant rate. (f) How would your drawings change if the changes in speed were not uniform, that is, if the speed were not changing at a constant rate?
A speedboat travels in a straight line and increases in speed uniformly from i = 20.0 m/s to f = 30.0 m/s in displacement x of 200 m. We wish to find the time interval required for the boat to move through this displacement, (a) Draw a coordinate system for this situation, (b) What analysis model is most appropriate for describing this situation? (c) From the analysis model, what equation is most appropriate for finding the acceleration of the speedboat? (d) Solve the equation selected in part (c) symbolically for the boats acceleration in terms of i, f, and x. (e) Substitute numerical values lo obtain the acceleration numerically. (f) Find the time interval mentioned above.
1. If an object is moving with constant acceleration, what is the shape of its velocity vs. time graph? What is the significance of the slope? What is the significance of the y-intercept? 2. If an object is moving with constant acceleration, what is the shape of its distance vs. time graph? What is the significance of the slope of a distance vs. time curve? What is the significance of the y-intercept?
Kinematic Universe. Which of the following is/are ALWAYS TRUE? I. Displacement is a vector quantity that has a magnitude and direction that depends on the path taken. II. Average velocity is equal to instantaneous velocity when the acceleration is zero. II. Instantaneous velocity is the slope of the tangent line in the velocity vs. time graph. O Il only O I and Il only O I l only O I only
1. A vehicle drives at a constant speed of 215km/h for 42.3 seconds, accelerates by 29.4m/s2 for 5.00s. And finally, slows down to the stop. The entire movement takes 88.6 seconds. A. Make a vector-speed diagram or graph as a function of time for the situation. B. Determine the maximum speed. C. Determine the total displacement. 2. Two 9.82km separate trains travel on parallel tracks in opposite directions, one to the other. Train A has a speed of 5.87 km/h at departure and accelerates at a rate of 0.29m/s2. Train B has a speed of 20.3m/s at departure and an acceleration of 0.69m/s2. A. Make a diagram or graph position according to time for the situation. B. Determine when trains meet.
3. Shown below is the acceleration function for a particle over the approximately first two seconds of its motion. Draw an approximate graph of velocity as a function of time assuming v, = 0 m/s. alt) t 20 15 10 5. 0.5 1.0 1.5 2.0 2.5 4. Let vector A point from the origin into the first quadrant of the xy plane and vector B point from the origin into the third quadrant. The vector Ă – B must be in which quadrant?
A) Find its velocity as a function of time. Letters A and B are not allowed in the answer. Express your answer in terms of t. B) Find its position as a function of time. Letters A and B are not allowed in the answer. Express your answer in terms of t. C) Calculate the maximum velocity it attains. Letters A and B are not allowed in the answer. Express your answer in meters per second.
Which if the following are TRUE? Select one or more: a. At constant initial velocity, as the launch angle increases, maximum height decreases. The maximum height is inversely proportional to the square of the sine of the launch angle. b. At constant initial velocity, as the launch angle increases, maximum height also increases. The maximum height is directly proportional to the square of the sine of the launch angle. c. At constant initial velocity, as the launch angle increases, time of flight also increases. The time of flight is directly proportional to the sine of the launch angle. d. At constant initial velocity, as the launch angle increases, time of flight decreases. The time of flight is inversely proportional to the sine of the launch angle.
If the velocity is constant towards the right direction, the graph of displacement x vs time t is a A. line with a positive slope. B. line with negative slope. C. parabola in the first quadrant. O D. parabola in the 4th quadrant. An object is moving towards the right direction. Velocity is constant. The graph of velocity vs time t is a line O A. along the t axis B. parallel to the t axis C. parallel to the v axis. O D. with nonzero slope. Velocity of a moving object is towards the right. Velocity is constant. The graph of acceleration a vs time t is a A. line parallel to the acceleration a axis. B. line along the acceleration a axis. C. line along the t-axis. OD.line with positive slope.
2. Treat the motion of a particle which moves along the s-axis as shown, .ft or m -1 3. The displacement of a particle is given by s = Where s is in feet and t is in seconds. 4t -20t + 80r - 30, Plot the displacement vs. time graph for the first 15 seconds. Show the zero velocity/velocities. b. Plot the velocity vs. time graph for the first 15 seconds. Show the zero acceleration. Plot the acceleration vs. time graph for the first 15 seconds, d. Using the graphical solution, solve for the maximum positive displacement reached by the particle. e. Using the graphical solution, solve for net displacement reached by the particle. f Using the graphical solution, solve for the total distance travelled by the particle. a.
2b. Using this data, sketch a plot of velocity vs time. Label your plot axes, so it is clear when (and if) the velocity changes.