The first equation of motion gives the relation between _________.

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RRB ALP Previous Paper 4 (Held On: 10 Aug 2018 Shift 2)
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  1. Position and time
  2. Position and velocity
  3. Velocity and time
  4. Velocity and acceleration

Answer (Detailed Solution Below)

Option 3 : Velocity and time
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  • The first equation of motion gives the relation between "velocity and time".
  • The first equation of motion is v = u +at.
  • Here, v is the final velocity, u is the initial velocity, a is the acceleration and t is the time.
  • The velocity-time relation gives the first equation of motion and can be used to find acceleration.
  • The position-time relation gives the second equation of motion, i.e. s = ut + (1/2) at2
  • The position-velocity relation gives the third equation of motion, i.e. v2 = u2 +2as
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