Question

The Distance can be________.
1. Negative
2. Zero
3. Positive
4. All of the above

Answer 1

Correct Answer - Option 3 : Positive

Option 3 is correct, i.e. Positive.

• Distance:
  • The length of the actual path covered by a moving object in a given time.
  • It is a scalar quantity.
  • It is always positive.
  • The unit of distance is a meter (m).

Note:

• Displacement:
  • It is the shortest distance covered by a body in a definite direction.
  • It is a vector quantity.
  • It can be positive, Negative or Zero.
  • The unit of displacement is a meter(m).
• Vector quantity: 
  • A vector quantity is a quantity that has both a magnitude and a direction and obeys the triangle law of addition or equivalently the parallelogram law of addition. 
  • Examples of Vector quantities are Displacement, Weight, Force, Momentum.
• Scalar quantity:
  • It has only magnitude and no direction.
  • The physical quantities which are specified with the magnitude or size alone are Scalar Quantities. 
  • Examples of Scalar Quantities are Length, Speed, Work, Energy, speed, mass, volume, time, power, Electric Potential, Magnetic flux, etc.