Physics Kinematics: Motion in a Straight Line - Graphical Vector Addition and Subtraction

The video tutorial covers the graphical addition and subtraction of 2D vectors, emphasizing the importance of using accurate measurements with tools like rulers and protractors. It explains the concept of a resultant vector and its applications, such as finding unknown vectors and relative velocity. The tutorial uses a narrative involving Vector Man to illustrate vector operations, including vector addition and subtraction. The lesson concludes with a review of key concepts, such as the properties of vectors and the process of vector resolution.

What is a resultant vector?

• A vector that is equal to the sum of two or more vectors

• A vector that is always horizontal

• A vector that is perpendicular to another vector

• A vector that has no magnitude

Which of the following is NOT an application of vector addition and subtraction?

• Finding a resultant vector

• Solving equations to find an unknown vector

• Calculating the area of a triangle

• Finding a relative velocity

When graphically adding vectors, how should they be joined?

• Head to tail

• Tail to tail

• Head to head

• Tail to head

In the ship's velocity example, what is the resultant velocity's direction?

• 11.3 meters per second

• 13 degrees East of North

• 13 degrees West of North

• 347 degrees

What is the scale used in the ship's velocity example?

• 1 meter represents 10 centimeters per second

• 1 meter represents 1 centimeter per second

• 1 centimeter represents 10 meters per second

• 1 centimeter represents 1 meter per second

What is the angle of Vector Man's slide down the slope?

• 16 degrees

• 80 degrees

• 85 degrees

• 45 degrees

How is vector subtraction performed?

• By adding a vector with the same magnitude but opposite direction

• By reversing the order of addition

• By subtracting the magnitudes directly

• By adding a vector with the same magnitude and direction

What is the final displacement of Vector Man after swimming back to the surface?

• 50 meters at 80 degrees

• 45 meters down

• 55 meters right

• 37 meters at 85 degrees

What is a negative vector?

• A vector with the same magnitude but opposite direction

• A vector that is always horizontal

• A vector with zero magnitude

• A vector that points upwards

Why does the order not matter when adding vectors?

• Because vectors are always perpendicular

• Because vectors are always parallel

• Because vectors can be translated without affecting their sum

• Because vectors have no direction