A car is traveling along a straight highway with a speed of 72 kph (20 m/s) when the driver suddenly applies the brakesjust before entering the curved section A-B, REDUCING its speed at a constant rate until it reaches point B. The 90-mlong curved section A-B has a constant radius of curvature r. An accelerometer mounted on the car recorded a totalacceleration of 1.74m/s² just before the car passes point B.B.I 061. Which of the following is FALSE regarding the car's motion along the curved section A-B?Its velocity is decreasing and is tangent to its path.Its tangential acceleration is tangent to its path.Its acceleration is increasing in magnitude.Its normal acceleration is directed towards the center of curvature of the path.

First statement," it's velocity is decreasing and is tangent to its path " is true because it is…

Answered: A car is traveling along a straight…

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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An object slides along the inside of a vertical circular track and never loses contact with the track. As it slides upward it slows down, and as it slides downward it speeds up. It's not known whether it's moving clockwise or counterclockwise in the view shown. Match points A, B, C, and D with possible acceleration vectors at those points. Only one of the acceleration vectors shown is possible at each point. A с a B
The figure below shows an object initially at point A traveling in the +x-direction. It turns in a circular path at constant speed until it is traveling in the +y-direction at point C. The quarter-circle arc from A to C is 245 m in length, and the particle moves from A to C in 38.0 s. Point B on the path is 35.0° below the x-axis. 0 35.0⁰ (a) What is the speed of the object (in m/s)? m/s Need Help? (b) What is the magnitude and direction of the acceleration when the object is at point B? (Enter the magnitude in m/s² and the direction in degrees counterclockwise from the +x-axis.) magnitude m/s² direction Read It counterclockwise from the +x-axis
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The figure below shows an object initially at point A traveling in the +x-direction. It turns in a circular path at constant speed until it is traveling in the +y-direction at point C. The quarter-circle arc from A to C is 239 m in length, and the particle moves from A to C in 33.0 s. Point B on the path is 35.0° below the x-axis. O 35.0⁰ magnitude direction C B x (a) What is the speed of the object (in m/s)? m/s (b) What is the magnitude and direction of the acceleration when the object is at point B? (Enter the magnitude in m/s² and the direction in degrees counterclockwise from the +x-axis.) m/s² ° counterclockwise from the +x-axis
A red car has a speed of 17.6 m/s and is driving on a circular track with a radius of 111 m. A blue car has a speed of 10.3m/s and is driving on a circular track with a radius of 55 m. What is the ratio of the centripetal acceleration of the red car to that of the blue car? ared/ablue =
here it explodes, relative to its firing point? P40. A train slews down as it rounds a sharp horizontal turn, going from 90.0 km/hr to 50.0 km/hr in the 15.0 s it takes to "round the bend". The radius of the curve is 150 m. Compute the acceleration at the moment the train speed reaches 50.0 km/hr. Assume the train continues to slow down at this time at the same rate.

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