Questions point) Listen The graph represents the relationship between distance and time for an object that is moving along a straight line. What is the instantaneous speed of the object at t= 5.0 seconds? 6 5 す 3 Distance (m) 1 2 3 4 5 6 8 Time (s) 6.8 m/s 0.0 m/s 2.5 m/s 4.0 m/s 0.8 m/s B

Questions point) Listen The graph represents the relationship between distance and time for an object that is moving along a straight line. What is the instantaneous speed of the object at t= 5.0 seconds? 6 5 す 3 Distance (m) 1 2 3 4 5 6 8 Time (s) 6.8 m/s 0.0 m/s 2.5 m/s 4.0 m/s 0.8 m/s B

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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2. Treat the motion of a particle which moves along the s-axis as shown. ft or m -1 1 2 3 The displacement of a particle is given by s = 4t3 – 20t² + 80t – 30, Where s is in feet and t is in seconds. a. 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. с.
A particle is moving with a motion defined by x = 6t + 2t m, what is the equation for the acceleration? A. a =0 B. a = 36t m/s? = 3t/10 + t/3 m/s? D. a = 18t? +2 m/s E. None of the above. C. a
An object is moving with constant non-zero velocity in the +x direction. The position versus time graph of this object is Select one: a. a straight line making an angle with the time axis. b. a vertical straight line. C. a parabolic curve. d. a horizontal straight line.
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1. Refer to the velocity-time graph of a jogger. The positive direction is away from the jogger's home. Rank the four distances for the time intervals, A, B, C, D in decreasing order. Explain your answer. 15 10 C 40 50 30 20 Time (s) 0. 10 20 (s/w) pe 25
rock climber stands on top of a 50-m-high cliff overhanging a pool of water. He throws two stones vertically downward 1.0 s apart and observes that they cause a single splash. The initial speed of the first stone was 2.0 m/s.a. How long after the release of the first stone does the second stone hit the water?b. What was the initial speed of the second stone?c. What is the speed of each stone as it hits the water?
2.) A buggy car starts at 10 m and travels in the +x direction with a constant velocity of 1.5 m/s for 4 s. The car immediately stops for 3 s and turns around and travels in the opposite direction with a constant velocity of 2 m/s for 10 s. a. Draw a position -vs- time graph and velocity -vs- time graph.
7. An object starts its motion with a constant velocity of 2.0 m/s toward the east. After 3.0 s, the object stops for 1.0 s. The object then moves toward the west a distance of 2.0 m in 3.0 s. The object continues traveling in the same direction, but increases its speed by 1.0 m/s for the next 2.0 s. Draw a position- time graph to represent its motion. Which graph below could represent the motion of this object? A) B) x (m) 16 * (m) 6. 4 14 12 2 10 þ: (s) -2 -4 4 -6 -8 -10 þr (s) -12 D) x (m) 16 x (m) 16 14 14 12 12 10 10 6 4 2. $ r (s)
2. The graph shows the speed-time graph of a car travelling on a straight road. The car slows down as it approaches a town and accelerates again after passing through it. The road the car travels is straight throughout the whole journey. 29 Speed (m/s) 14 14 29 35 time (s) a. Find the distance the car traveled in town. b. Find the acceleration of the car after passing through the town.
The Hint The position of a particle moving along the x axis is given by x = (21 +22t+8t²) m, where t is in s. What is the instantaneous velocity of the particle at t= 5.0 s ? a. b. C. e. f. 10.2m/s -2.0 m/s -82.0m/s 331 m/s 102m/s -6.0 m/s
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The minimum stopping distance for a car traveling at a speed of 30 m/s is 60 m, including the distance traveled during the driver’s reaction time of 0.50 s. a. Draw a position-versus-time graph for the motion of the car. Assume the car is at xi = 0 m when the driver first sees the emergency situation ahead that calls for a rapid halt. b. What is the minimum stopping distance for the same car traveling at a speed of 40 m/s?