Lesson 2 - Vectors

A vector is heading northeast making an angle of 30º with the positive x-axis, has a magnitude of a = 50.0 m/s². The vertical component ay will be _________________________.

• 43 m/s²

• 25 m/s²

• 100 m/s²

• 50 m/s²

A vector heading northeast is making an angle of 30º with

the east. It has a magnitude of 200.0 m/s. The horizontal

component V_x will be ______________.

• V_x = 273.2 m/s

• V_x = 173 m/s

• V_x = 100 m/s

• V_x = 115.47 m/s

Based from the figure, which of the following is the vertical component?

• 273.2 m/s

• 173 m/s

• 100 m/s

• 115.47 m/s

Vectors A, B and C are seen in the figure. With R being the resultant vector. Which of the following equations is CORRECT?

• A + B + C = R

• A + B + R = C

• A + R + C = B

• A + B = R + C

In which direction does the resultant vector point?

• Southwest

• Northwest

• Northeast

• Southeast

When vectors A and B are added together to form vector C the relationship between the magnitudes of the vectors is given by: A² + B² = C² . Which statement concerning these vectors is true?

• A and B must be parallel

• A and B could be antiparallel

• A and B must be at right angles to each other.

• A and B could have any orientation relative to each other

If V is the magnitude of a vector making an angle of θ, then the vertical component V_y, will be _______________.

• V_y = V_x / V sin (θ)

• V_y = (V) (V_x sin (θ))

• V_y = (V_x ) (V sin (θ))

• V_y = (V) (sin (θ))

Which vector gives the sum of these two

vectors?

• 
• 
• 
• 

If vectors X and Y are added, then the resultant would be best represented by vector __________.

• 
• 
• 
• 

A bug crawls 4.25 m along the base of a wall. Upon reaching a corner, the bug’s direction of travel changes from south to west. The bug then crawls 3.15 m before stopping. What is the magnitude of the bug’s displacement?

• 3.83 m

• 4.91 m

• 5.29 m

• -5.29 m