Friday

August 22, 2014

August 22, 2014

Posted by **carlton** on Saturday, October 22, 2011 at 11:03pm.

Points

Submissions Used

1 2 3 4 5

0/5 –/5 5/5 0/5 0/5

1/10 0/10 1/10 2/10 2/10

Total

5/25

A car initially traveling eastward turns north by traveling in a circular path at uniform speed as in the figure below. The length of the arc ABC is 210 m, and the car completes the turn in 38.0 s.

(a) What is the acceleration when the car is at B located at an angle of 35.0°? Express your answer in terms of the unit vectors and .

The response you submitted has the wrong sign. m/s2 + m/s2

(b) Determine the car's average speed.

m/s

(c) Determine its average acceleration during the 38.0 s interval.

The response you submitted has the wrong sign. m/s2

The response you submitted has the wrong sign.

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