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NEETPhysicsMotion in One Dimension

An observer moves at a constant speed v₀ parallel to a regular service of buses. The buses operate in both directions at a constant speed v_b (where v_b > v₀ ) with a departure time period T . Consider the following statements: A. The spatial distance between two consecutive buses moving in the same direction is (v_b - v₀)T . B. The time interval between the observer's encounters with buses moving in the opposite dir

Options

  1. AOnly one
  2. BAll four
  3. COnly three
  4. DOnly two

Correct answer

D. Only two

Step-by-step solution

Statement A is incorrect: The spatial distance between consecutive buses depends only on the bus speed and departure period, given by d = v_b T , which is independent of the observer's speed. Statement B is correct: The time interval for opposite direction encounters is t_ opp = d v_b + v₀ = v_b T v_b + v₀ . Since v_b + v₀ > v_b , it follows that t_ opp Statement C is correct: The time interval for same direction encounters is t_ same = d v_b - v₀ = v_b T v_b - v₀ . As v₀ increases, the denominator (v_b - v₀) decre

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