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ఒక రేణువు సరళరేఖలో ప్రయాణిస్తూ ఉంటే, ఈ కింది గ్రాఫ్ దేన్ని సూచిస్తుంది.

  1. రేణువు యొక్క త్వరణం అసమానంగా ఉంటుంది.
  2. త్వరణంలో మార్పు స్థిరంగా ఉంటుంది
  3. రేణువు యొక్క త్వరణం సమానవేగంలో తగ్గుతోంది
  4. ఈ గ్రాఫ్ లో వివరాలు సరిపోవు

Answer (Detailed Solution Below)

Option 2 : త్వరణంలో మార్పు స్థిరంగా ఉంటుంది
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Detailed Solution

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సరైన జవాబు త్వరణంలో మార్పు స్థిరంగా ఉంటుంది.

కాన్సెప్ట్:

  •  ఒక వస్తువు యొక్క వేగంలో మార్పురేటుని ఆ వస్తువు యొక్క త్వరణం అంటారు.
  • దీనికి పరిమాణం మరియు దిశ రెండూ ఉంటాయి, అందుకని ఇదొక వెక్టార్ పరిమాణం.

  • స్థానభ్రంశం-కాలం యొక్క గ్రాఫ్లో ఏ బిందువు వద్దనైనా వాలు (m) ఆ బిందువు యొక్క తక్షణ వేగాన్ని తెలుపుతుంది.
  • ఏ గ్రాఫ్ లోనైనా ఒక బిందువు వద్ద వాలు ఇలా కనుగొనబడుతుంది: వాలు (m) = tanθ
  • ఇక్కడ θ బిందువు x - అక్షంతో చేసే కోణం.


వివరణ:

  • ఇచ్చిన గ్రాఫ్ త్వరణం vs కాలాన్ని సూచించే గ్రాఫ్.
  • మన కేసులో, ఇచ్చిన గ్రాఫ్ యొక్క వాలు సున్నా అవుతుంది ఎందుకంటే ఈ కేసులో కోణం(θ) సున్నా అవుతుంది.
  • అంటే, 
  • దీని నుండి త్వరణంలో మార్పు రేటు సున్నా అని గ్రహించవచ్చు. అందుకని కదలిక మొత్తంలో త్వరణం స్థిరంగా ఉండి తీరాలి.
  • ఈవిధంగా ఎంపిక 2 సరైనది.

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