Question

Please Help Quick

Consider the average speed of a runner who jogs around a track four times. The distance (400m) remains constant for each lap. However, each lap is run 5 seconds slower than the first. The time for each lap increases. The average speed for each lap ______________. This is an example of a(n) _____________ relationship.

A) increases, direct

B) decreases, direct

C) increases, inverse

D) decreases, inverse

Note: If you have a question please do not ask it in the answer section of this question.

Answer 1

(D) decreases, inverse

Average speed of a body is defined as the ratio of the distance traveled to the time taken to travel the distance. The runner runs the same distance of 400 m during each lap but takes 5 seconds more for each lap.

Since
`v_a_v_g=(d)/(t)`, as time increases, the average speed for each lap increases.

Thus,
`v\alpha (1)/(t)` when the distance traveled is the same. This is an example of an inverse proportionality relationship.