Question : ____ in a particular direction is velocity.
Option 1: Acceleration
Option 2: Displacement
Option 3: Speed
Option 4: Distance
Correct Answer: Speed
Solution : The correct answer is Speed .
Speed in a particular direction is known as velocity. Velocity requires both speed and the direction of movement. The SI unit of speed and velocity is metres per second. Speed is a scalar quantity, and velocity is a vector quantity, which also needs direction. Speed can be defined as how fast an object moves or the distance travelled per unit of time.
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