Verified Solution • 2025–26 Session moderate

QP 50-51: Q5: HC Verma: Concepts of Physics - Volume 1 Chapter-3 Rest and Motion Kinematics P 50-51: Q5 Solution: Mark the correct statements for a particle going on a straight…

Mark the correct statements for a particle going on a straight line:

Multiple Choice Options

  • A a) If the velocity and acceleration have opposite sign, the object is slowing down.
  • B b) If the position and velocity have opposite sign the particle is moving towards the origin.
  • C c) If the velocity is zero at an instant, the acceleration should also be zero at that instant.
  • D d) If the velocity is zero for a time interval, the acceleration is zero at any instant within the time interval.

Step-by-Step Verified Solution

Statements (a), (b), and (d) are correct.


  1. (a) Correct
  2. Speed is the magnitude of velocity (∣v∣\vert{}v\vert{}). When velocity and acceleration have opposite signs, acceleration opposes the direction of motion, causing the particle to slow down.


  1. (b) Correct
  2. If position x > 0 and velocity v < 0, the particle moves in the negative direction toward the origin. If x < 0and v > 0, it moves in the positive direction toward the origin. In both cases, the distance from the origin (∣x∣\vert{}x\vert{}) decreases.


  1. (c) Incorrect
  2. A particle can have zero velocity at an instant while possessing non-zero acceleration. For example, when a ball thrown straight up reaches its peak height, its instantaneous velocity is zero, but its acceleration is gg directed downwards.


  1. (d) Correct
  2. Acceleration is the time derivative of velocity (a=dvdta = \frac{dv}{dt}). If velocity remains constant at zero throughout a time interval, its rate of change over that interval is zero at every instant.


All Questions in this Chapter

QP 49-50: Q1 QP 49-50: Q2 QP 49-50: Q3 QP 49-50: Q4 QP 49-50: Q5 QP 49-50: Q6 QP 49-50: Q7 QP 49-50: Q8 QP 49-50: Q9 QP 49-50: Q10 QP 49-50: Q11 QP 49-50: Q12 QP 49-50: Q13 QP 50-51: Q1 QP 50-51: Q2 QP 50-51: Q3 QP 50-51: Q4 QP 50-51: Q5 QP 50-51: Q6 QP 50-51: Q7 QP 50-51: Q8 QP 50-51: Q9 QP 50-51: Q10 QP 51-54: Q1 QP 51-54: Q2 QP 51-54: Q3.1 QP 51-54: Q3.2 QP 51-54: Q3.3 QP 51-54: Q3.4 QP 51-54: Q4.1 QP 51-54: Q4.2 QP 51-54: Q5 QP 51-54: Q6 QP 51-54: Q7 QP 51-54: Q8.1 QP 51-54: Q8.2 QP 51-54: Q8.3 QP 51-54: Q9.1 QP 51-54: Q9.2 QP 51-54: Q10 QP 51-54: Q11 QP 51-54: Q12 QP 51-54: Q13 QP 51-54: Q14 QP 51-54: Q15.1 QP 51-54: Q15.2 QP 51-54: Q15.3 QP 51-54: Q16 QP 51-54: Q17 QP 51-54: Q18.1 QP 51-54: Q18.2 QP 51-54: Q19 QP 51-54: Q20 QP 51-54: Q21 QP 51-54: Q22 QP 51-54: Q23.1 QP 51-54: Q23.2 QP 51-54: Q23.3 QP 51-54: Q24 QP 51-54: Q25.1 QP 51-54: Q25.2 QP 51-54: Q25.3 QP 51-54: Q26 QP 51-54: Q27 QP 51-54: Q28 QP 51-54: Q29 QP 51-54: Q30 QP 51-54: Q31 QP 51-54: Q32.1 QP 51-54: Q32.2 QP 51-54: Q32.3 QP 51-54: Q33.1 QP 51-54: Q33.2 QP 51-54: Q34 QP 51-54: Q35 QP 51-54: Q36 QP 51-54: Q37 QP 51-54: Q38 QP 51-54: Q39 QP 51-54: Q40 QP 51-54: Q41 QP 51-54: Q42 QP 51-54: Q43.1 QP 51-54: Q43.2 QP 51-54: Q44 QP 51-54: Q45 QP 51-54: Q46.1 QP 51-54: Q46.2 QP 51-54: Q47.1 QP 51-54: Q47.2 QP 51-54: Q48 QP 51-54: Q49.1 QP 51-54: Q49.2 QP 51-54: Q50 QP 51-54: Q51 QP 51-54: Q52 QPage 48-49: Q1 QPage 48-49: Q2 QPage 48-49: Q3 QPage 48-49: Q4 QPage 48-49: Q5 QPage 48-49: Q6 QPage 48-49: Q7 QPage 48-49: Q8 QPage 48-49: Q9 QPage 48-49: Q10.1 QPage 48-49: Q10.2 QPage 48-49: Q10.3 QPage 48-49: Q11 QPage 48-49: Q12 QPage 48-49: Q13 QPage 48-49: Q14

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