Speed and Velocity

What is the main difference between speed and velocity?

• Speed is a scalar quantity, while velocity is a vector quantity.

• Speed has both magnitude and direction, while velocity only has magnitude.

• Speed is measured in m/s, while velocity is measured in km/h.

• Speed is always greater than velocity.

How is average speed calculated?

Which of the following is a correct unit for velocity?

(a)  

• 10 m/s east
• 10 km/h

• 10 m/s

• 10 mph

If a car travels 60 km/h north, what is its velocity?

• 60 km/h north

• 60 km/h

• 60 m/s north

• 60 m/s

Why is understanding the units of speed and velocity important?

• For accurate measurement and analysis of motion.

• To ensure speed is always greater than velocity.

• To convert speed into velocity easily.

• To measure only the magnitude of motion.

Tags

NGSS.MS-PS3-1