10. A car goes around a curve of radius Rat a speed V. It experiences a centripetal acceleration A. What is its acceleration if it goes around a curve of radius 3R at a speed of 2V? a. (2/3) A b. (4/3) A c. (2/9) A d. (9/2) A e. (3/2) A

10. A car goes around a curve of radius Rat a speed V. It experiences a centripetal acceleration A. What is its acceleration if it goes around a curve of radius 3R at a speed of 2V? a. (2/3) A b. (4/3) A c. (2/9) A d. (9/2) A e. (3/2) A

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Description: I am unsure of how to solve this problem. Any help would be greatly appreciated. Thank you. 10. A car goes around a curve of radius R at a speed V. It experiences a centripetal acceleration A. Whatis its acceleration if it goes around a curve of radi

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter1: Introduction: The Nature Of Science And Physics

Section: Chapter Questions

Problem 2PE: A car is traveling at a speed of 33 m/s. (a) What is its speed in kilometers per hour? (b) Is it...

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33. A curve on a highway has a radius of curvature of 200.0 m. What is the magnitude of a car’s centripetal acceleration as it travels along this curve at a constant speed of 26.8 m/s in 4.00 s?A. 0 m/sB. 0.134 m/sC. 3.59 m/sD. 6.70 m/s
9. A particle moves at a constant speed in a circular path with a radius of 2.06 cm. If the particle makes four revolutions each second, what is the magnitude of its acceleration? C. 13 m/s D. 15 m/s A. 20 m/s B. 18 m/s O A OD O B
2. A girl jogs around a horizontal circle with a constant speed. She travels one half of a revolution, a distance of 20.0 m along the circumference of the circle, in 8.00 s. a. What is the radius of the circle in meters? b. What is the period? c. What is her speed? d. What is her radial acceleration is?
i changes to this answer. Question 1 2.5poin A particle moves in a cirele path of radius r and speed v. It then increases its speed to 3 v while traveling aloug same circular The centripetal acceleration ar of the particle has changed by a factor: Oa. 4 O b. 5 O d. 9 O e. 12 A Moving to the next question prevents changes to this answer.
3. An airplane is flying at 90 m/s [SW]. The pilot performs a 180° turn in 30.0 s without changing speed or altitude. What is the average acceleration of the airplane? a. 3.0 m/s? [SWw] b. 3.0 m/s? [NE] c. 6.0 m/s? [SW] d. 6.0 m/s² [NE] e. None of above
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7. At t = 0, a particle leaves the origin with avelocity of u 9.0m/s j the xy plane with an acceleration of a 2.0i- 4.0j m/s2. At the instant the x coordinate of the particle is 15 m, what is the speed of the particle? A. 10 m/s B. 16 m/s C. 12 m/s D. 14 m/s E. 26 m/s maximum height above ch se, 2019. Departme
6. A ball is thrown horizontally from the top of a building 110 m high. The ball strikes the ground at a point 65 m horizontally away from and below the point of release. What is the speed of the ball just before it strikes the ground? a. 14 m/s b. 23 m/s c. 36 m/s d. 49 m/s e. 61 m/s
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A hiker walks 2.5 km [W] and then 4.5 km [S]. What is her total displacement? a. 7.0 km [SW] b. 5.1 km [S29°W] c. 2.0 km [WS] d. 5.1 km [S61°W] A stone is thrown vertically downward with a speed of 5.0 m/s from a bridge. Accelerating under Earth's gravity, the stone strikes the water 2.1 seconds later. From what height above the water was the stone thrown? (Assume 2 significant digits.)? a. 11 m b. 17 m c. 21 m d. 32 m An object initially moving at 8.0 m/s [S] ends up moving at 8.0 m/s [N] after a period of 10.0 s. What is the object's average acceleration during this period? a. 0.80 m/s² [S] b. 0.80 m/s² [N] c. 1.6 m/s² [N] d. 0 An astronaut on the moon throws a wrench straight up at 5.23 m/s. How long will it take before it is observed to be falling downward with a velocity of 2.64 m/s? The acceleration due to gravity on the moon is 1.63 m/s² [down]. a. 4.83 s b. 1.59 s c. 0.803 s d. 0.629 s
037. A fishing sinker on a string revolves in a circle of radius 1.00 m with a constant speed of 2.75 m/s. What is its cen- tripetal acceleration?
3. A tennis ball is hit into the air and moves along an arc. Neglecting air resistance, a. for horizontal motion, where along the arc is the speed maximum? How about minimum speed, where? Justify your answer. b. For vertical motion, where along the arc is the velocity maximum? How about minimum velocity, where? Justify your answer.