A car is traveling around a circular track at a constant speed. Which of the fol

Question

A car is traveling around a circular track at a constant speed. Which of the following quantities are changing?

E. A, B, and C are all changing

Refer to the drawing shown here (Figure 5.1 from the textbook). Look at Points 1, 2, 3, and 4 on the surface of a DVD as it rotates at a steady rate. Which point is moving with the greatest linear velocity (in m/s)?

E. All four points have the same linear velocity (m/s)

Consider again Fig. 5.1, the DVD rotating at a steady rate. Which of the four points has the greatest ANGULAR velocity (in rpm)?

E. All four points have the same angular velocity (in rpm)

Question 4 of 5

Convert the following angle in degrees to radians:
70 degrees

E. 0.095*pi radians

A car moves around a circular track at a steady speed. Is the car accelerating? Briefly explain your answer.

A. speed B. direction C. velocity D. both B and C

E. A, B, and C are all changing

Refer to the drawing shown here (Figure 5.1 from the textbook). Look at Points 1, 2, 3, and 4 on the surface of a DVD as it rotates at a steady rate. Which point is moving with the greatest linear velocity (in m/s)?

      A. Point 1 B. Point 2 C. Point 3 D. Point 4

E. All four points have the same linear velocity (m/s)

Consider again Fig. 5.1, the DVD rotating at a steady rate. Which of the four points has the greatest ANGULAR velocity (in rpm)?

      A. Point 1 B. Point 2 C. Point 3 D. Point 4

E. All four points have the same angular velocity (in rpm)

Question 4 of 5

2.0 Points

Convert the following angle in degrees to radians:
70 degrees

A. 0.19*pi radians B. 35*pi radians C. 0.39*pi radians D. 70*pi radians

E. 0.095*pi radians

2.0 Points

A car moves around a circular track at a steady speed. Is the car accelerating? Briefly explain your answer.

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Explanation / Answer

A car is traveling around a circular track at a constant speed. Which of the following quantities are changing

Ans: D) both B and C

Refer to the drawing shown here (Figure 5.1 from the textbook). Look at Points 1, 2, 3, and 4 on the surface of a DVD as it rotates at a steady rate. Which point is moving with the greatest linear velocity (in m/s)?

Ans: Figure not shown here

Consider again Fig. 5.1, the DVD rotating at a steady rate. Which of the four points has the greatest ANGULAR velocity (in rpm)?

Ans: Figure not shown here

Convert the following angle in degrees to radians:
70 degrees

Ans: C) 0.39*pi radians

A car moves around a circular track at a steady speed. Is the car accelerating? Briefly explain your answer.

Ans: Car is accelerating but not in the linear direction. Car has centripetal acceleration due to circular motion. Direction of acceleration is inward to the track.

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