Answers edited by Anish M.

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• Dave is riding on a straight path. After 5 s, his speed is 3.0 m/s. After 7 s, his speed is 5.0 m/s. After 10 s, speed is 7.0 m/s. What was his acceleration from 5 s to 10 s?
  
• How do you find the center and radius of the circle: # x^2 + y^2 – 10x + 6y + 18 = 0#?
  
• A man is pulling on his dog with a force of 70.0 N directed at an angle of +30.0° to the horizontal. What are the x and y components of this force?