Physical Quantities

2) Every measurement involves two things - a number and a unit.

• True

• False

Which of the following is the SI unit of time ?

• minute

• hour

• second

• day

Which of the following best describe a Scalar Quantity ?

• it has magnitude

• it has both magnitude and direction

• it has direction

• it cannot be measured

Which of the following best describe a Vector Quantity?

• it has magnitude

• it has both magnitude and direction

• it has direction

• it can be measured

The units for velocity are__________.

• meters per second
• meters
• second per meter
• acceleration

The variable used for final velocity is

• v_o
• v_w
• v_f
• s

What symbol represents change in physics?

• θ
• β
• Δ
• π

What is the value of the acceleration due to gravity or  "g"?

• -9.8 m/s²
• 40 m/s
• 6.67 x 10^-11 m/s
• 20 m/s

What is the correct SI unit for mass?

• Kilograms
• newtons
• pounds
• grams

The unit for velocity is:

• m
• s
• m/s²
• m/s