Question

in a relay race, four runners (a, b, c, and d) work together to run a total distance of 400 m. each runner runs 100 m before handing a baton to the next runner. a clock starts measuring time when runner a begins. the time is recorded when each runner completes their part of the race. these times are shown on the distance vs. time graph below.

Explanation:

Since the problem is not fully stated (e.g., what is being asked about the graph, like finding speed of a runner, total time, etc.), we can't provide a solution yet. If we assume a common question like "Find the speed of runner A", here's how we'd solve it:

Step1: Identify distance and time for A

Runner A runs 100 m (from 0 to 100 m) in 20 s (from 0 to 20 s).

Step2: Use speed formula ($v = \frac{d}{t}$)

$v = \frac{100\ \text{m}}{20\ \text{s}}$

Step3: Calculate speed

$v = 5\ \text{m/s}$

Answer:

If the question was speed of A, the answer is $5\ \text{m/s}$. But since the actual question is missing, please provide the specific question (e.g., speed of a runner, time taken for total race, etc.) to get a precise answer.