b) The centripetal force is another type of force; TRUE or FALSE? c) The centripetal force keeps a body in circular motion; TRUE or FALSE? d) The centripetal force always acts toward the center of the circle of motion; TRUE or FALSE? e) An object in uniform circular motion has constant velocity; TRUE or FALSE? 2. Imagine that you are sitting in a car tossing a ball straight up into the air. a) If the car is moving at a constant velocity, will the ball land in front of, behind, or in your hand? b) If the car rounds a curve at a constant speed, where will the ball land?

b) The centripetal force is another type of force; TRUE or FALSE? c) The centripetal force keeps a body in circular motion; TRUE or FALSE? d) The centripetal force always acts toward the center of the circle of motion; TRUE or FALSE? e) An object in uniform circular motion has constant velocity; TRUE or FALSE? 2. Imagine that you are sitting in a car tossing a ball straight up into the air. a) If the car is moving at a constant velocity, will the ball land in front of, behind, or in your hand? b) If the car rounds a curve at a constant speed, where will the ball land?

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter7: Rotational Motion And Gravitation

Section: Chapter Questions

Problem 58AP: A roller coaster travels in a circular path, (a) Identify the forces on a passenger at the top of...

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A car of mass 1 230 kg travels along a circular road of radius 60.0 m at 18.0 m/s. (a) Calculate the magnitude of the cars centripetal acceleration. (b) What is the magnitude of the force of static friction acting on the car? (See Section 7.4.)
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As their booster rockets separate, Space Shuttle astronauts typically feel accelerations up to 3g, where g = 9.80 m/s2. In their training, astronauts ride in a device where they experience such an acceleration as a centripetal acceleration. Specifically, the astronaut is fastened securely at the end of a mechanical arm, which then turns at constant speed in a horizontal circle. Determine the rotation rate, in revolutions per second, required to give an astronaut a centripetal acceleration of 3.00g while in circular motion with radius 9.45 m.
A door in a hospital has a pneumatic closer that pulls the door shut such that the doorknob moves with constant speed over most of its path. In this part of its motion, (a) does the doorknob experience a centripetal acceleration? (b) Does it experience a tangential acceleration?
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