DC -- Review Unit 2 reading, pt. 1

Relates the lengths of the legs of a right triangle.

• Newton's 3rd law

• Free-body diagram

• F = m a

• Pythagorean theorem

The diagram shows the components of motion for two dropped objects. Which component is constant?

• horizontal velocity

• vertical velocity

• resultant velocity

A quantity with magnitude and direction.

• Parallel

• Perpendicular

• Vector

• Scalar

A graphical way to add vectors.

• criss-cross method

• head-to-tail method

• action-reaction

• free-body diagram

How do you form the sum, or resultant vector?

• Draw a line from the tip of the second vector to the start of the first vector

• Draw a line from the tail of the first vector to the head of the second vector

• Draw a line connecting the tips of both vectors

Which of these is the negative of vector B?

• 
• 
• 
• 

Vector subtraction is ---

• the resultant is less than the starting vector

• the opposite of the exponent

• the resultant in the negative direction

• the addition of a negative vector

Which method of vector addition uses trigonometry?

• Analytical

• Graphical

• Head-to-Tail

To find the magnitude of A_x ---

• 
• 
• 

What does this equation help you find?

• the resultant

• the magnitude of the first vector (A)

• the magnitude of the angle

• the direction of the first vector (A)