Physical Quantities, Scalar and Vector Quantities, and SI Units Quiz

Which of the following is a fundamental difference between scalar and vector quantities?

• Scalar quantities have magnitude only, while vector quantities have both magnitude and direction
• Scalar quantities are always larger than vector quantities
• Vector quantities can only be measured in physics
• Scalar quantities are more complex to calculate

In the MLT (Mass, Length, Time) system, which dimension represents acceleration?

• MLT⁻²
• ML²T⁻¹
• MLT
• M²LT

Which physical quantity is considered a scalar quantity?

• Velocity
• Displacement
• Speed
• Momentum

What does the base unit Kelvin primarily measure?

• Heat intensity
• Thermal energy
• Temperature
• Thermal conductivity

Which of the following is NOT a fundamental physical quantity in the SI system?

• Length
• Mass
• Electric current
• Pressure

A vector quantity that represents the rate of change of position is:

• Distance
• Displacement
• Speed
• Velocity

The resistance to change in motion is scientifically defined as:

• Momentum
• Acceleration
• Force
• Inertia

Which quantity measures the amount of matter in an object?

• Weight
• Volume
• Density
• Mass

In the SI system, the base unit for electric current is:

• Ampere
• Volt
• Watt
• Ohm

A quantity that can be added algebraically without considering direction is a:

• Vector quantity
• Scalar quantity
• Fundamental quantity
• Derived quantity