Question

For a particle moving with constant acceleration in a straight line, the speed and magnitude of velocity are always equal.

• A. True
• B. False

Answer 1

The correct option is B False

Speed:

• The rate of change of position of an object in any direction.
• SI unit is $m{s}^{-1}$.
• It is a scaler quantity.

Velocity:

• The rate of change of the object's position with respect to a frame of reference and time.
• It is a vector quantity.
• The magnitude of velocity is the instantaneous speed of the object.

Constant acceleration:

• If the velocity of the particle changes at a constant rate, then this rate is known as constant acceleration.

When a particle moving with constant acceleration:

• Speed can never be negative while the magnitude of velocity may be negative as the acceleration is constant.

Hence, the given statement is false.