A student begins at rest and then walks north at a speed of v₁ = 0.85 m/s. The student then turns south and walks at a speed of v2 = 0.33 m/s. Take north to be the positive direction. Refer to the figure. the trip? d = S m N If the student travels in the stated directions for 30.0 s at speed v₁ and 20.0 s at speed v2, what is the net displacement, in meters, during

A student begins at rest and then walks north at a speed of v₁ = 0.85 m/s. The student then turns south and walks at a speed of v2 = 0.33 m/s. Take north to be the positive direction. Refer to the figure. the trip? d = S m N If the student travels in the stated directions for 30.0 s at speed v₁ and 20.0 s at speed v2, what is the net displacement, in meters, during

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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In an experiment, a shearwater (a seabird) was taken from its nest, flown a distance 5120 km away, and released. It found its way back to its nest 12.5 days after release. Part A If we place the origin in the nest and extend the +x-axis to the release point, what was the bird's average velocity for the return flight? Express your answer in meters per second. ANSWER: Vay.-x = m/s Part B What was the bird's average velocity for the whole episode, from leaving the nest to returning? Express your answer in meters per second. ANSWER: Vav. = m/s
Include a picture or description of your coordinate system (origin, positive direction).
Question: A train slows down as it rounds a sharp horizontal turn, going from 90.0km/h to 50.0km/h in the 15.0s it takes to round the bend. The radius of the curve is 150m. Compute the total acceleration at the moment the train speed reaches 50.0km/h. Assume the train continues to slow down at this time at the same rate. A. a-2 m/s? B. a-0.74 m/s? C. a=1.48 m/s? D. a=1.29 m/s? E. a=2 m/s?
HOW?An automobile travels on straight road for 39km at 24km/h. If then continues in the same direction for another 39 km at 48km/h. a. What is the average velocity of the car during his 78 km trip? (Assume that it moves positive direction) b. What is the average speed?
24. A rocket is fired upward on a straight upward trajectory at 90 degrees to the surface perfectly, starting from rest with an acceleration of +29.4 m/s² for the first 4 seconds of travel. After finishing these 4 seconds it runs out of gas but continues its upward movement on its original path for a short time. a. b. What is the maximum height it reaches? If after reaching the maximum height it is allowed to fall in free fall in a perfectly linear path towards the earth, what is its final speed just before hitting the ground? Select one: - b. a. Maximum height = 135.8 meters, final velocity = 940.8 meters/seconds Maximum height = 940.8 centimeters, final velocity = 135.8 centimeters/seconds c. Maximum height = 940.8 centimeters, final velocity = 13.58 meters/seconds d. Maximum height = 940.8 meters, final velocity = 135.8 meters/seconds
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A stone is dropped from rest from the top of a high-rise. It takes △t = 2.6 s forit to reach the ground. a. What is the initial velocity, Vi, of the stone in m/s? b. What is the value of the magnitude of acceleration, in m/s^2?? c. Express the final velocity vf of a object travelling with an acceleration a for a time period △t which starts with an initial velocity vi. d. Calculate the magnitude of vf in m/s.e.Express the displacement △y of an object travelling with acceleration a during a time period △t that has an initial velocity vi.
4. A jogger warms up by running 350 meters east at an average speed of 3.8 m/s, then running west 240 meters at an average speed of 4.2 m/s. a. How much time does the first part of the trip take? b. How much time does the second part of the trip take? c. How long does the entire trip take? d. What is the total distance for the entire trip? e. What is the magnitude of the jogger's displacement for the entire trip? f. What is the average speed for the entire trip? g. What is the magnitude of the jogger's average velocity for the entire trip?