Question

multiple select question
select all that apply
which describe the position of an object in two dimensions?

5 m north and 7 m east

2 blocks west and 4 blocks south

2 in. down and 8 in. up

20 cm to the left and 10 cm to the right

10 ft up and 8 ft to the left

15 km west and 8 km east

Explanation:

To describe the position of an object in two dimensions, we need two non - opposite (or independent in different axes) directions.

• For "5 m north and 7 m east": North and east are perpendicular directions (different axes in 2D), so this can describe a 2D position.
• For "2 blocks west and 4 blocks south": West and south are perpendicular directions (different axes in 2D), so this can describe a 2D position.
• For "2 in. down and 8 in. up": Down and up are opposite directions along the same vertical axis, so they do not describe a 2D position (they are along one axis, not two independent axes).
• For "20 cm to the left and 10 cm to the right": Left and right are opposite directions along the same horizontal axis, so they do not describe a 2D position (they are along one axis, not two independent axes).
• For "10 ft up and 8 ft to the left": Up (vertical axis) and left (horizontal axis) are perpendicular directions, so this can describe a 2D position.
• For "15 km west and 8 km east": West and east are opposite directions along the same horizontal axis, so they do not describe a 2D position (they are along one axis, not two independent axes).

Answer:

A. 5 m north and 7 m east
B. 2 blocks west and 4 blocks south
E. 10 ft up and 8 ft to the left