1.1.1 Physical Quantities and Units

Which one of these options is NOT a fundamental quantity?

• Time

• Electric current

• Energy

• Luminous Intensity

What is the SI unit of electric current?

• Ampere (A)

• Volt (V)

• Ohm

• Mole

Which one of these options is NOT a derived quantity?

• Area

• Volume

• Density

• Temperature

Choose TWO(2) examples of base quantity

• Mass and density

• Length and area

• Length and mass

• Mass and velocity

Which of the following pairs of physical quantity and SI unit is correct ?

• Mass - SI unit : Gram
• Time - SI unit : Hour
• Electric current - SI unit : Volt
• Temperature - SI unit : Kelvin

What is derived quantities ?

• a tendency to do nothing or to remain unchanged.
• combination of two or more base quantities
• the quantity of motion of a moving body, measured as a product of its mass and velocity.

Tags

NGSS.MS-PS3-1

What is the SI unit of weight?

• kilograms

• grams

• newtons

• kg

In which of the following derived units can mechanical work be expressed? Let W = F . d, such that F (= mass times acceleration) stands for force applied on an object and d, the distance displaced by the object.

• $kgm^{-2}$

• $kgm^{-1}$

• $kg^2ms^{-2}$

• $kgm^2s^{-2}$

The International System of (SI) unit for mass is:

• g
• kg
• G
• KG

What is the SI unit of speed?

• m/s

• cm/s

• km/hour

• kg/m

Tags

NGSS.MS-PS3-1