what is the equation describing the instantaneous velocity of a car on an evaluated air track, and what is the shape of the graph of the instantaneous velocity versus time?
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what is the equation describing the instantaneous velocity of a car on an evaluated air track, and what is the shape of the graph of the instantaneous velocity versus time?
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- A person gets in an elevator on the ground floor and rides it to the top of the building. Choose a velocity-versus time graph for this motion.figure 1 shows a velocity-versus-time graph for the bicycle trips of two friends with respect to the parking lot where they started. Xena's position at time zero is 0 and Gabriele's position is 60 m. Determine the displacement of Xena in 40 s. Determine the displacement of Gabriele in 30 s. What time interval is needed for Xena to catch Gabriele?What is the displacement of the runner, whose velocity versus time graph is shown in the Figure, in the first 14.5 s?What is the average velocity of the runner during the 16 s time interval shown in the Figure? What is the average instantaneous speed of the runner during this 16 s time interval?
- Which of the following statements are true regarding velocity-time graphs?I. The slope of a velocity-time graph is acceleration. II. The graph has a slope of zero if the object is at rest. III. A line with negative slope indicates that the object is slowing down.a bus speeds from 15 to 35 m/sec over a time interval of 4 seconds. Draw a motion diagram (with acceleration). What is the average speed of the car? What is the acceleration?Consider the graph of velocity versus time shown in the figure for an object undergoing one-dimensional motion. What would the position versus time graph look like for this graph?
- sketch what you think the speed time graph would look like for a vehicle that begins at 10 m/hr. and remains at that speed for 10 minutes. Label this section A. Then the vehicle (over a five-minute interval) increases speed from 10 to 20 m/hr. Label this section B. Then immediately the vehicle begins to slow down. It takes the vehicle 10 minutes to slow down from 20 m/hr. to zero. Label this section C. This graph would have 3 intervals. The first interval (A) is from 0 to 10 minutes. The second interval (B) is from 10 minutes to 15 minutes. The third interval (C) is from 15 minutes to 25 minutes. The x-axis needs to go from zero to 25 minutes. The y axis needs to go from zero to 20 m/hr. Describe the motion of the vehicle in each interval as increasing, decreasing, constant, or at rest.This distance vs time graph does not represent velocity. Why? Explain in your own words.Twila throws a ball directly downward from a window that is 25.0 m above the ground. It takes the ball 1.97 s to impact with the ground. a) Calculate the initial velocity that the ball was thrown at. b) Calculate the impact velocity. c) If the ball was dropped from rest how long would it have taken to impact the ground?