Distance Travelled Definition
The question asks what is needed to describe the distance an object has travelled.
Understanding Distance
Distance is a scalar quantity in physics. This means it only requires a numerical value (magnitude) to be fully described. It represents the total length of the path covered by an object, regardless of the direction.
Analyzing the Options
- Option 1 (Only the direction of motion): Incorrect. Direction is irrelevant for distance.
- Option 2 (Both magnitude and direction): This describes displacement, not distance.
- Option 3 (The starting and ending points only): This relates to displacement, not the total path length.
- Option 4 (Only the numerical value, which is its magnitude): This correctly defines a scalar quantity like distance.
Conclusion on Distance
Therefore, to describe the distance an object has travelled, only its magnitude is required.
Important Questions from Physical Quantities
Which of the following is a vector quantity?
A. Time
B. Temperature
C. Distance
D. Velocity
Which of the following is a scalar quantity?
Pressure is measured in terms of
A. Mass & Density
B. Work done
C. Force and Area
D. Force and Distance
What is the dimensional formula of density?
1 barrel of oil = ________ litre.
