D 2. [pt] A car race is taking place on the track shown. All the cars are moving

Question

D 2. [pt] A car race is taking place on the track shown. All the cars are moving at constant speeds. The cars are on curved segments of the track, except for the car at point F. The car at point A has velocity VA, the car at B, VB, etc. Select all the statements that are true, eg, ABC. If none are correct, enter N. A. The track is equally curved at point A and point E. If the car at point A has twice the speed of the car at point E, its acceleration is the same as that of the car at point E. B. The acceleration of the car at point D is perpendicular to V, and directed toward the inside of the track. C. The acceleration 1 of the car at point B is perpendicular to V, and directed toward the inside of the track. D. If all cars have equal speeds, the acceleration of car A is largest E. The acceleration of the car at point A is perpendicular to V and directed toward the outside of the track. F. The acceleration of the car at point C is perpendicular to Vand directed toward the outside of the track. Answer: Submit All Answers

Explanation / Answer

The acceleration of car at point A is perp to VA and directed towards inside of the track.
The acceleration of car at point C is perp to VC and directed towards inside of the track.
The acceleration of car at point D is perp to VA and directed towards outside of the track.
The acceleration of car at point F is 0.
If all speeds are equal, D is smallest radius so it has largest acceleration.
If A moves twice as fast as E, then acceleration of A is 4 times that of E.

So,
option A - Incorrect
Option B - Incorrect
Option C - Correct
Option D - Incorrect
Option E - Incorrect
Option F - Incorrect

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