P11 Kinematics 2D Vectors

What is the combination of 2 vectors called?

• Joint vector
• Resultant vector
• Combined vector
• Sum vector

How do you subtract vectors?

• Add the vectors together
• Multiply the vectors
• Divide the vectors
• Reverse the direction of the vector you want to subtract and then add it to the other vector.

Global angles in physics are measured in the __ direction

• Clockwise

• Counterclockwise

If you are using the graphical method of vector addition, you have to choose a

• angle and magnitude for each vector
• scale and direction for each vector
• length and direction for each vector
• magnitude and direction for each vector

cosθ =

• opposite side / adjacent side
• hypotenuse / opposite side
• adjacent side * hypotenuse
• adjacent side / hypotenuse

The vector's x component is calculated with trigonometry as

• x = magnitude + cos(angle)
• x = magnitude / cos(angle)
• x = magnitude * sin(angle)
• x = magnitude * cos(angle)

Which of the following is Pythagorean theorem?

• c^2 = a^2 + b^2
• c^2 = a^2 - b^2
• c^2 = a^2 * b^2
• c^2 = a^2 / b^2

What symbol is used to represent angles?

• θ

• >
• *
• ∠

True or false: Every 2D vector can be written as x and y components.

• False
• Partially true
• Sometimes
• True

What type of vectors can be separated into components?

• Displacement

• Velocity

• Forces

• All of them can