A car is traveling around a horizontal circular track with radius r = 190 m at a

Question

A car is traveling around a horizontal circular track with radius r = 190 m at a constant speed v = 15 m/s as shown. The angle theta A = 30 degree above the x axis, and the angle theta B = 65 degree below the x axis What is the magnitude of the car's acceleration? What is the x component of the car's acceleration when it is at point A What is the y component of the car's acceleration when it is at point A What is the x component of the car's acceleration when it is at point B What is the y component of the car's acceleration when it is at point B As the car passes point B, the y component of its acceleration is

Explanation / Answer

mag of aan=v^2/r=15^2/190=1.184m/s^2

at A

xcomponent=-1.184cos30=-1.026m/s^2

y compo=-1.184sin30=-0.592m/s^2

at B

x compo =-1.184cos65=-0.5m/s^2

y compo=1.184sin65=1.073m/s^2

6.decreasing

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