Exploring Physics Quantities and Vectors

What is the SI unit of length?

• meter

• kilometer

• centimeter

• millimeter

Which of the following is a vector quantity?

• Velocity

• Speed

• Mass

• Temperature

What is the least count of a standard ruler?

• 2 mm

• 0.5 mm

• 5 mm

• 1 mm

If a vector A has components (3, 4), what is its magnitude?

• 5

• 6

• 4

• 7

What is the unit vector along vector (2, 2)?

• (0, 0)

• (2, 2)

• (1, 1)

• (1/√2, 1/√2)

How do you calculate the resultant of two vectors A and B?

• The resultant vector R is calculated by multiplying the magnitudes of vectors A and B.

• The resultant vector R is determined by taking the average of the two vectors A and B.

• The resultant vector R is found by subtracting the components of vector B from vector A.

• The resultant vector R is calculated by adding the components of vectors A and B.

What is the maximum error if the measured value is 10.0 ± 0.2?

• 0.2

• 0.1

• 0.5

• 1.0

Which of the following represents a scalar quantity?

• Temperature

• Speed

• Mass

• Distance

What is the direction of the unit vector along vector (-1, 1)?

• 90 degrees

• 135 degrees

• 180 degrees

• 45 degrees

If vector A = (5, 0) and vector B = (0, 5), what is A + B?

• (0, 5)

• (5, 0)

• (0, 0)

• (5, 5)