Homework Help: physics

Posted by Karrine on Thursday, October 18, 2012 at 11:09pm.

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 259 m, and the car completes the turn in 38.0 s.

a)Determine the car's speed.m/s
b)What is the magnitude and direction of the acceleration when the car is at point B? (it is a point in the 4th quadrant that is 35 degrees in the clockwise direction)
magnitude: in m/s^2
direction:degrees counterclockwise in the + x direction?

Ive tried over and over and I SUCK!!!!!please help

physics - drwls, Friday, October 19, 2012 at 1:41am
a) for the speed V, divide the arc length by the driving time, 38 s.

b) The acceleration magnitude is V^2/R.
It points to the center of the turn arc.

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