40 m80 mA race track is constructed such that two arcs of radius 80 m at A and40 m at 8 are joined by two stretches of straight track as in the figureabove.In a particular trial run, a driver travels at a constant speed of 50 m/s for one complete lap.(a) The ratio of the tangential acceleration at A to that at B is which of the following?O 1/2O 1/4O 2O 4O The tangential acceleration is zero at both points.(b) The ratio of the centripetal acceleration at A to that at B is which of the following?O 1/2O 1/4O 2O 4O The centripetal acceleration is zero at both points.(c) The angular speed is greatest at which of the following?O AO BO It is equal at both A and B.

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80 m 40 m A race track is constructed such that two arcs of radius 80 m at A and 40 m at 8 are joined by two stretches of straight track as in the figure above. In a particular trial run, a driver travels at a constant speed of 50 m/s for one complete lap. (a) The ratio of the tangential acceleration at A to that at B is which of the following? O 1/2 O 1/4 O 2 0 4 O The tangential acceleration is zero at both points. (b) The ratio of the centripetal acceleration at A to that at B is which of the following? O 1/2 O 1/4 O 2 0 4 O The centripetal acceleration is zero at both points. (c) The angular speed is greatest at which of the following? O A OB O It is equal at both A and B.

80 m 40 m A race track is constructed such that two arcs of radius 80 m at A and 40 m at 8 are joined by two stretches of straight track as in the figure above. In a particular trial run, a driver travels at a constant speed of 50 m/s for one complete lap. (a) The ratio of the tangential acceleration at A to that at B is which of the following? O 1/2 O 1/4 O 2 0 4 O The tangential acceleration is zero at both points. (b) The ratio of the centripetal acceleration at A to that at B is which of the following? O 1/2 O 1/4 O 2 0 4 O The centripetal acceleration is zero at both points. (c) The angular speed is greatest at which of the following? O A OB O It is equal at both A and B.

Glencoe Physics: Principles and Problems, Student Edition

1st Edition

ISBN:9780078807213

Author:Paul W. Zitzewitz

Publisher:Paul W. Zitzewitz

Chapter8: Rotational Motion

Section: Chapter Questions

Problem 103A

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