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  • Wow, that car was fast  in making a lap around the streets.
  • Excuse me sir, do you know how fast the car went?
  • Sure, you have to look at the circular motion.
  • What is that sir?
  • Circular motion is a movement of an object along the circumference of a circular path.
  • Okay and how do you use the Circular Motion?
  • There are some formulas such as v=2pieR/T and Ac=v2/r.
  • And how do we use those formulas?
  • We plug in the numbers so 30 m and 9.0 s and so V=2Pie(40 m) divided by 9.0 s equals 20 m/s.
  • Wow thank you so much sir.
  • Then we use Ac=v2/r. So (20m/s) power of 2 divided by 30 m and we get 13.3 m/s squared.
  • And then?
  • You are very Welcome.
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