Question

Joe runs 8.75 times around a track in 1,125.803 seconds. If one lap around the track is 420.3 meters, which is the best estimate of the runner's average speed in meters per second (m/s)?

Answer 1

8.75laps(420.3m/lap)/1125.803=3.26666 m/s

I don't know how your answers were rounded, so you can round appropriately.

Answer 2

Answer:

Runner's average speed is 3.26666832 m/s.

Step-by-step explanation:

One lap around the track = 420.3 meters

Joe runs around a track  = 8.75 times

Joe runs total = 420.3 × 8.75 = 3,677.625 meters

Joe runs 3,677.625 meters in 1,125.803 seconds.

runner's average speed per second = $\frac{3,677.625}{1,125.803}$

                                                            = 3.26666832 meter/second.

Runner's average speed is 3.26666832 m/s.