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Motion in One Dimension — JEE physics STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 ScienceJEE physicsMotion in One Dimension1 Mark
MCQ
A particle is constrained to move on a straight line path. It returns to the starting point after $10 sec$. The total distance covered by the particle during this time is $30 m$. Which of the following statements about the motion of the particle is false
  • A
    Displacement of the particle is zero
  • B
    Average speed of the particle is $3 m / s$
  • ✓
    Displacement of the particle is $30 m$
  • D
    Both and
✓

Answer

Correct option: C.
Displacement of the particle is $30 m$
(c) Displacement of the particle will be zero because it comes back to its starting point\\text { Average speed }=\frac{\text { Total distance }}{\text { Totatime=\frac{30\mathrm{~m}}{10 \mathrm{sec}}=3 \mathrm{~m} / \mathrm{s}$

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