Question

A fighter jet flies 3 km west and then 2 km east in 8 minutes. Determine the jet's average velocity. (Remember to convert!)

Answer 1

7.69km/hr due east

Step-by-step explanation:

Given parameters:

Displacement due west = 3km

Displacement due east = 2km

Time taken = 8 minutes

Unknown:

Average velocity = ?

Solution:

Average velocity is the rate of change of displacement with time.

Velocity =
`(displacement)/(time )`

Displacement is deals with the start and the end;

Here, displacement = 3km - 2km = 1km due east

Time = 8min

60min = 1hr

8min =
`(8)/(60)` = 0.13hr

Average velocity =
`(1km)/(0.13hr)` = 7.69km/hr due east