Which statement about velocity is true? A. It has only magnitude. B. It has only direction. C. It has magnitude and direction. D. It is a scalar quantity.
The answer is C. Velocity is a physical vector quantity. This means that to define velocity, both magnitude and direction are needed. So only C is correct.
Answer: The correct answer is Option C.
Explanation:
There are 2 types of quantities:
1. Scalar quantity: To describe these quantities, only magnitude is required. For example: Speed, distance etc..
2. Vector quantity: To describe these quantities, we require both direction and magnitude. For example: Velocity, displacement etc..
Velocity is defined as the rate of change of displacement.
Mathematically,
\(v=\frac{d}{t}\)
where, v = velocity
d = displacement
t = time
As, velocity is a vector quantity.
Hence, the velocity has both magnitude and displacement. Therefore, the correct answer is Option C.