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Author Question: A car is moving along a straight highway and accelerates at a constant rate while going from point A ... (Read 114 times)

Sufayan.ah

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on: Jul 28, 2018
A car is moving along a straight highway and accelerates at a constant rate while going from point A to point B. If the acceleration is positive, increasing the speed of the car, where does the position where the instantaneous speed equals the average speed occur for the interval from A to B?
 a. midway between A and B
  c. closer to B than to A
  b. closer to A than to B
  d. Any of the answers could be correct depending on the original speed.

Question 2

A runner circles a track of radius 100 m in 100 s moving at a constant rate. If the runner was initially moving east, what has been the runner's average acceleration when halfway around the track?
 a. At a constant rate, the average acceleration would be zero.
  b. 0.13 m/s2, south
  c. 0.25 m/s2, west
  d. No answer is correct.


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olderstudent

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Reply #1 on: Jul 28, 2018
Answer to Question 1

B

Answer to Question 2

C


Sufayan.ah

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Reply 2 on: Jul 28, 2018
Great answer, keep it coming :)

Jsherida

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Reply 3 on: Yesterday
Gracias!

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