Operations on vectors

Two forces on an object are in opposite directions. How do we calculate the resultant force?

• divide one by the other
• multiply them
• find the difference between them
• add them together

Write your answer as a linear combination (no spaces)

Describe the translation using a column vector

• A

• B

• C

What is the first thing you do when solving a vector problem?

• Draw the vectors, making sure they are the right size and in the correct direction
• Look at the equation sheet!
• Draw the vectors, always pointing to the right
• Just do the math, it's always so easy

Bob walks 2 miles north and turns west and walks 2 miles. What is Bob's general displacement?

• 4 miles northeast

• 4 miles northeast

• 3 miles northwest

• 3 miles southeast

If u = (2, -6) and v = (-4, 3), what is u + v?

• (-2, -9)

• (6, -3)

• (-2, -3)

• (6, -9)

If a = (2, 2) and b = (-2, -2), what is a + b?

• (0, 0)

• (4, 4)

• (-4, -4)

• (2, -2)

• (5,14)

• (-5,14)

• (1,14)

• (1,-14)

• (-1,14)

If there are two forces going in the same direction how would you find the net force?

• Subtract
• Add
• Neither
• Multiply