What is the difference between speed and velocity?

Speed is a scalar (magnitude only); velocity is a vector (magnitude and direction).

What are common units for velocity?

Meters per second (m/s) and kilometers per hour (km/h) are most common.

Yes, negative velocity means movement in the opposite of the chosen positive direction.

Velocity measures how fast something moves in a specific direction. It is calculated by dividing displacement by time.

v = d / t

Where:

vVelocity — Speed with direction in m/s

dDisplacement — Distance traveled in meters

tTime — Time elapsed in seconds

Here's how to calculate velocity step by step:

1Measure displacement: Determine the total distance traveled in a straight line.
2Measure time: Record the total time taken for the journey.
3Divide: Divide displacement by time to get velocity.

Following these 3 steps gives you the final velocity value.

A car traveling 150 km north in 2 hours has a velocity of 75 km/h north, which differs from its speed if it took a winding road.

Velocity calculations are essential for physics, navigation, sports performance, and transportation planning.

Velocity includes direction; speed does not.

Ensure distance and time use compatible units (m and s, or km and h).

Displacement is straight-line distance, not total path length.