Multiple choice

A particle is constrained to move on a straight line path. It returns to the starting point after $10sec$. The total distance covered by the particle during this time is $30m$. Which of the following statements about the motion of the particle is true?

  1. Displacement of the particle is zero
  2. Average speed of the particle is $3m/s$
  3. Displacement of the particle is $30m$

  4. both (a) and (b)
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Displacement is the change in position. Since the particle returns to the starting point, displacement is 0. Average speed is total distance / total time = 30m / 10s = 3m/s. Both statements are true.

AI explanation

Since the particle returns to its starting point after 10 seconds, its displacement is zero, making statement A true. Using the average speed formula, which is total distance divided by total time, we get 30 m divided by 10 s, yielding an average speed of 3 m/s. Therefore, both statements A and B are true.

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