Question 1

What is the difference between speed and velocity?

Accepted Answer

Speed is magnitude only (50 km/h). Velocity includes direction (50 km/h north). Velocity is a vector.

Question 2

Can velocity be negative?

Accepted Answer

Yes, if direction is defined. Moving backward might be negative velocity. Speed (magnitude) is always positive.

Question 3

What's the fastest speed possible?

Accepted Answer

The speed of light (299,792,458 m/s or about 670 million mph) is the universal speed limit. Nothing with mass can reach it.

Question 4

Why do pilots and sailors use knots?

Accepted Answer

One knot = one nautical mile per hour. Nautical miles relate directly to Earth's latitude (1 nm = 1 minute of latitude), simplifying navigation.

Speed Velocity Converter

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