Physics Quiz: Understanding Fundamental Quantities and Motion

What is a fundamental physical quantity?

• A quantity that can be derived from other quantities
• A basic quantity that cannot be defined in terms of other quantities
• A quantity that is always changing
• A quantity that has no units

Which of the following is an example of a derived physical quantity?

• Mass
• Length
• Speed
• Time

Which of the following is a fundamental physical quantity?

• Length
• Speed
• Acceleration
• Density

What distinguishes a derived physical quantity from a fundamental physical quantity?

• It can be measured directly
• It is formed from combinations of fundamental quantities
• It cannot be measured
• It has no units

Which combination represents the three base quantities in mechanics?

• Mass, length, and time
• Force, energy, and power
• Speed, acceleration, and velocity
• Weight, volume, and density

What is the primary difference between a scalar and vector quantity?

• A vector has both magnitude and direction, while a scalar has only magnitude
• A scalar has both magnitude and direction, while a vector has only magnitude
• Vectors can only be positive
• Scalars can only be measured in meters

Which of these is a scalar quantity?

• Temperature
• Velocity
• Displacement
• Force

What is the key difference between distance and displacement?

• Distance is the total path length, displacement is the straight-line distance from start to finish
• Distance is always less than displacement
• Distance has direction while displacement doesn't
• Displacement is always greater than distance

A car drives 5 km east, then 5 km west. What is its displacement?

• 0 km
• 5 km
• 10 km
• -10 km

What is the main difference between speed and velocity?

• Velocity includes direction while speed does not
• Speed includes direction while velocity does not
• Speed is always faster than velocity
• Velocity is always faster than speed