Scalar, Vector, Distance, Displacement

The result of vector multiplication is

• A vector

• A scalar

If they pull with a force of 200N for 10m, about how much work do they do?

• 1700 J

• 1800 J

• 1900 J

• 2000 J

You pull your friend on a sled for 15 m at the angle provided and do 2600 J of work. What force did you exert?

• 150

• 175

• 200

• 225

What is the resultant of these two vectors?

• +17 m

• +3 m

• -17 m

• -3 m

Which of the following describes the vector above?

• 45 cm

• 45 cm at 30 degrees North of East

• 45 cm at 30 degrees East of North

• 45 cm North East

When adding two vectors graphically, a+b=c. Does b+a produce the same resultant vector c?

• Yes, two vectors added together always produce the same resultant vector

• No, because order matters

• Yes, but c will be pointing in the opposite direction

• No, because you can't add two vectors

When subtracting two vectors, a-b=c. Does b-a produce the same resultant vector c?

• Yes, two vectors subtracted together always produce the same resultant vector

• No, because order matters

• Yes, but c will be pointing in the opposite direction

• No, because you can't subtract two vectors

A resultant vector is

• equal to the sum of one vector.

• equal to the sum of two or more vectors.

• equal to the difference of one vector.

Distance and direction of an object's change in position from a starting point

• displacement

• distance

• motion

• reference point

If vector a= (4, -5) and vector b= (-7, 4) Find a+b

• (3, 9)

• (-3, -1)

• (11, 1)

• (-3, -9)