Answer:
1 The average velocity for first interruption is

2 The average velocity for second interruption is

Step-by-step explanation:
From the question we are told that
The length of each the flags is

The distance of separation at the mid-point

The interruption time for the first flag is

The interruption time for the second flag is
The Initial velocity for this motion is obtained mathematically as

L is the distance traveled because the photogate timer measure time at that particular distance
Substituting value


The final velocity is mathematically evaluated as

Substituting value

