physics
posted by Emily .
A car initially traveling eastward turns north by traveling in a circular path at uniform speed as in the figure. The length of the arc ABC is 214 m, and the car completes the turn in 40.0 s (Figure shows coordinate plane with point A on y axis point C on +x axis and point B in the middles of the two on the arc, with an angle of 35* between +x axis and point B
A) Determine the car's speed.
Found this answer to be 5.35 m/s which is correct
B) What is the magnitude and direction of the acceleration when the car is at point B?
magnitude:____m/s
Direction:___*counterclockwise for the x+ axis
Part B is where I am completely lost.

The acceleration is V^2/R.
R is the radius of the arc. V is the speed you already computed.
The direction of acceleration is towards the center of the circular arc. At B, that would appear to be 145 degrees counterclockwise from the +x axis.
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