Physics-
General
Easy

Question

Each of the three graphs represents acceleration versus time for an object that already has a positive velocity at time t1. Which graphs show an object whose speed is increasing for the entire time interval between t1 and t2?

  1. graph I, only    
  2. graphs I and II, only    
  3. graphs I and III, only    
  4. graphs I, II, and III    

The correct answer is: graphs I, II, and III

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