Q. 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 statement about the motion of the particle is false
A) Displacement of the particle is $zero$
B) Average speed of the particle is 3 $m/s$
C) Displacement of the particle is 30 $m$
D) Both (a) and (b)
Explanation
(c) Displacement of the particle will be zero because it comes back to its starting point
$Average\ speed\ = \ \frac{Total\ distance}{Total\ time} = \frac{30m}{10sec} = 3\ m/s$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.