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?

V = 11.11 m/s

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

he kicked it 10 feet straight up into the air? i think this works.

t = 1/400 h   ⇔ 0.0025 h ⇔ 9s ⇔ 0.15 m

any of the answers are correct.