Kiley went 5 point 7 km/h north and then went 5 point 8 km/h west. From start to finish, she went 8 point 1 km/h northwest. Which best describes her numbers?
Answer
A
5 point 7 km/h north and 5 point 8 km/h west are average speeds, while 8 point 1 km/h northwest is the instantaneous speed.
B
5 point 7 km/h north and 5 point 8 km/h west are instantaneous velocities, while 8 point 1 km/h northwest is the average velocity.
C
5 point 7 km/h north and 5 point 8 km/h west are instantaneous speeds, while 8 point 1 km/h northwest is the average speed.
D
5 point 7 km/h north and 5 point 8 km/h west are average velocities, while 8 point 1 km/h northwest is the instantaneous velocity.