Question

Sallys physical education teacher timed her run and recorded the time and distance in the table below. What is her average speed?
Time (s) : 1, 2, 3, 4, 5
Distance (m) : 2, 5, 7, 10, 12
A) 3 m/s
B) 2.5 m/s
C) 2 m/s
D) 4 m/s

Answer 1

Answer: B) 2.5 m/s

Explanation: Find the average of the time and distance, and see how far they go in only 1 second.


1 + 2 + 3 + 4 + 5 = 15
15 divided by 5 = 3

3 seconds

2 + 5 + 7 + 10 + 12 = 36
36 divided by 5 = 7.2


7.2m per 3 seconds.

7.2 divided by 3 = 2.4

Therefore, the answer is technically 2.4m/s