Question

An automobile travels for 90 minutes along a highway. The graph shows the progress of the automobile, with its start point designated as distance = 0 km.

What is the automobile's average speed as it travels from a distance of 5 km to a distance of 15 km along the highway?

Answer 1

V = 11.11 m/s

Step-by-step explanation:

From the graph,

The time corresponds to the distance 5 Km is, t₁ = 15 min

The time corresponds to the distance 15 Km is, t₂ = 30 min

The distance traveled by the automobile is, d = 15 Km - 5 Km

= 10 Km

= 10000 m

The period of travel is given by the time interval t = t₂ - t₁

= 30 - 15

= 15 min

= 900 s

The average velocity of the automobile is,

V = d / t

= 10000 / 900

= 11.11 m/s

Hence, the average velocity of the automobile is, v = 11.11 m/s