B. Directions: Show your solution to the following problems. The position vs. time graph below describes the motion of a runner. z (m) 3 t (s) t (s) 3 1. What is the magnitude of the velocity of the runner during the first 4 seconds? 2. What is the velocity of the athlete from t=4 s to 7 s?

B. Directions: Show your solution to the following problems. The position vs. time graph below describes the motion of a runner. z (m) 3 t (s) t (s) 3 1. What is the magnitude of the velocity of the runner during the first 4 seconds? 2. What is the velocity of the athlete from t=4 s to 7 s?

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter3: Motion Along A Straight Line

Section: Chapter Questions

Problem 28P: A cyclist rides 8.0 km east for 20 minutes, then he turns and heads west for 8 minutes and 3.2 km....

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A stone is thrown vertically upward with a speed of 17.6 m/sm/s from the edge of a cliff 75.0 mm high. A.)How much later does it reach the bottom of the cliff? Express your answer to three significant figures and include the appropriate units. B.)What is its speed just before hitting? Express your answer to three significant figures and include the appropriate units. C.)What total distance did it travel? Express your answer to three significant figures and include the appropriate units.
A. Describe the Motion! Directions: Carefully analyze the graph of the motion of an object shown below, then answer the questions that follow. -1 -2 Time (s) 1. Where is the object at t=5s? 2. Describe the motion of the object per section. (a, b, c, d, e, f and g) 3. Calculate the total distance travelled by the object. 4. Construct the graph of average velocity against time. 5. What would a graph of the object's acceleration look like? Displacement (m)
1. Is it possible that the magnitude of the speed is also the magnitude of the velocity? Explain your answer. 2. A man walked from point A to F following the route in the grid below in 250 seconds. Determine: F B. 0.5 km a. the average speed in m/s b. the magnitude of the displacement c. the magnitude of the average velocity. E. A.
A motorcycle begins at rest at t0 = 0 seconds. The motorcycle starts moving, and eventually covers a distance d = 840 m, in a time tf = 189 s. In a coordinate system with north being the positive x-direction, the motorcycle's motion is in the northern direction (see figure). 1. What was the motorcycle's average speed, vavg, during this period, in meters per second? 2. What was the motorcycle's displacement in the northern direction during this period, in meters?
The Nardo ring is a circular test track for cars. It has a circumference of 12.5 km. Cars travel around the track at a constant speed of 100 km/h. A car starts at the easternmost point of the ring and drives for 15 minutes at this speed.a. What distance, in km, does the car travel?b. What is the magnitude of the car’s displacement, in km, from its initial position?c. What is the speed of the car in m/s?
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A cat walks in a straight line, which we shall call the -axis, with the positive direction to the right. As an observant physicist, you make measurements of this cat's motion and construct a graph of the feline's velocity as a function of time (Figure 1). I. Calculate the area under the graph between t = 0 and t = 6.0 s. (Express your answer to two significant figures and include the appropriate units.) II. For the time interval t = 0 to t = 6.0 s, what is the magnitude of the average velocity of the cat? (Express your answer to two significant figures and include the appropriate units.) III. Use constant-acceleration equations to calculate the distance the cat travels in this time interval. (Express your answer to two significant figures and include the appropriate units.)
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8. The graph below shows the velocities of two pinewood derby racecars. The cars start side-by-side. A B. 1 t(min) a. What is the meaning of the shaded region? b. Which car is ahead after 1 minute? After 2 minutes? Explain. c. Write down a description of the race based on the information from the graph.