Question

Kiley went 5.7 km/h north and then went 5.8 km/h west. From start to finish, she went 8.1 km/h northwest.

Answer 1

5.7 km/h north and 5.8 km/h west are instantaneous velocities, while 8.1 km/h northwest is the average velocity.

The answer choice above is correct.

The instantaneous velocities are the actual velocities while traveling ( the velocity during that instant ). The average velocity is the average of the instantaneous velocities ( the speed in one direction equivalent to the two speeds in different directions ).

I used speed in the explanation because velocity is speed with direction.

Answer 2

the correct answer is letter D