A car at a traffic signal starts from rest and makes a left turn in a circular trajectory of radius 7 m uniformly picking up speed and reaching a speed of 6 in 2 seconds. What is the magnitude of its total acceleration at t = 2 seconds?
A car at a traffic signal starts from rest and makes a left turn in a circular trajectory of radius 7 m uniformly picking up speed and reaching a speed of 6 in 2 seconds. What is the magnitude of its total acceleration at t = 2 seconds?
Principles of Physics: A Calculus-Based Text
5th Edition
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Raymond A. Serway, John W. Jewett
Chapter3: Motion In Two Dimensions
Section: Chapter Questions
Problem 25P: As their booster rockets separate, Space Shuttle astronauts typically feel accelerations up to 3g,...
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Please answer these 3 simple multiple choice questions.
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Step 1
Ques 1
Given
Radius = r = 7m
Velocity = v = 6
Time = t = 2 sec
As the velocity is uniform and is for circular motion
So acceleration is
A = v²/r
At t = 2 sec,
A = 6²/7
A = 36/7 = 5.14 m/s²
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