Question

During a track meet, Sarah ran 400m in 80s. What was her average speed?

1) 15 mph
2) 5 m/s
3) 15 m/s
4) 20 m/s

Answer 1

Sarah's average speed is 5 m/s.

Step-by-step explanation:

The average speed can be calculated by dividing the total distance traveled by the time taken. In this case, Sarah ran 400m in 80s, so her average speed is:

Average Speed = Total Distance / Time Taken = 400m / 80s = 5 m/s

Therefore, the correct answer is option 2) 5 m/s.