2-D motion

Horizontal motion would be represented by motion in the “x” direction on a coordinate grid.

• agree

• disagree

Vectors moving to the right or east are assigned negative values.

• agree

• disagree

When added together, two vectors in the same direction will combine to form a greater resultant than either of the two vectors.

• agree

• disagree

A vector moving due north will have a positive “y” component and zero “x” component on a coordinate grid.

• agree

• disagree

The resultant vector will be the same regardless of the order in which vectors are added.

• agree

• disagree

To find the hypotenuse of a right triangle, add the sides and then square this number.

• agree

• disagree

Answer explanation

*square root (see Pythagorean theorem)

State the x and y components of the

velocity vector shown.

• x = + 7 m/s

  y = + 7 m/s

• x = 0 m/s

  y = +7 m/s

• x = +7 m/s

  y = 0 m/s

• x = 0 m/s

  y = -7 m/s

Calculate the resultant vector when the two

vectors on the right are added together.

• 7 m/s right

• 4 m/s left

• 3 m/s right

• 11 m/s left

Calculate the resultant vector when the two

vectors on the right are added together.

• 7 m/s right

• 11 m/s right

• 3 m/s right

• 11 m/s left

Calculate the magnitude of the displacement using the two vectors on the right.

• 5.83 m/s

• 8 m/s

• 5 m/s

• 11 m/s