text: # phyics
  
  posted by .
  
  If two cars are traveling along a straight road, one behind the other. the first is traveling at a constant velocity of 10 m/s. the second, approaching from the rear, is traveling at 22 m/s. when the second car is 300m behind the first, the driver applies the brakes, producing a constant acceleration of -0.40 m/s^2. will the cars crash and if so, where and when?
  I find this really hard to understand
  
  • phyics -
  
  will it hit?
  use final velocity of 0 presuming that it came to a halt
  find the time elasped for it to stop using acceleration = change in v over change in t
  use the time to find how far both have traveled...
  yes it will hit
  it;s an equation of what time used for second car to travel 300+11t
  since we don't know the final velocity cant use equations of it
  so use change in x = intial v (t) + 1/2 a t^2
  so 300+11t=22t+(-2)t^2
  2t^2-11t+300=0
  using solve t using quadratic formula to see what time will it hit
explanation: The text extract contains a physics problem involving two cars traveling on a straight road. The problem asks whether the second car, which is initially traveling faster and behind the first car, will collide with the first car after applying the brakes. The extract also includes a detailed step-by-step solution to the problem, concluding that the cars will indeed collide.
distilabel_metadata.content: Evaluate the user given text extract and determine if it contains a math question and optionally and answer to this question.
  
  Output rules:
  
  1. Briefly describe the document and mention if it contains a question or a question and answer.
  2. Finalize the output with: Label: no-question,question,question-and-answer,multiple-question,multiple-question-and-answer
distilabel_metadata.role: system
distilabel_metadata.content: # phyics
  
  posted by .
  
  If two cars are traveling along a straight road, one behind the other. the first is traveling at a constant velocity of 10 m/s. the second, approaching from the rear, is traveling at 22 m/s. when the second car is 300m behind the first, the driver applies the brakes, producing a constant acceleration of -0.40 m/s^2. will the cars crash and if so, where and when?
  I find this really hard to understand
  
  • phyics -
  
  will it hit?
  use final velocity of 0 presuming that it came to a halt
  find the time elasped for it to stop using acceleration = change in v over change in t
  use the time to find how far both have traveled...
  yes it will hit
  it;s an equation of what time used for second car to travel 300+11t
  since we don't know the final velocity cant use equations of it
  so use change in x = intial v (t) + 1/2 a t^2
  so 300+11t=22t+(-2)t^2
  2t^2-11t+300=0
  using solve t using quadratic formula to see what time will it hit
distilabel_metadata.role: user
distilabel_metadata.raw_output_q_a_detector_0: The text extract contains a physics problem involving two cars traveling on a straight road. The problem asks whether the second car, which is initially traveling faster and behind the first car, will collide with the first car after applying the brakes. The extract also includes a detailed step-by-step solution to the problem, concluding that the cars will indeed collide.
  
  Label: question-and-answer