Question

a particle has an initial velocity of 30 m/s to the left. if it then passes through the same location 5 seconds later with a velocity of 50 m/s to the right, the average velocity of the particle during the 5 s time interval is?

Answer 1

The average velocity of a particle that returns to its starting point after a certain time period is 0 m/s, since the total displacement is 0 m.

Step-by-step explanation:

The question asks about the average velocity of a particle during a specific time interval where the particle changes direction. To find the average velocity, you would take the total displacement over the total time. In this scenario, the initial and final velocities are given, but they are in opposite directions, so you must take into account the direction when calculating displacement.

Since the particle returns to its initial location after 5 seconds, the displacement is 0 m, and thus the average velocity is also 0 m/s, regardless of the particle's velocities at individual moments within those 5 seconds.