Lesson 002

What is the main difference between speed and velocity?

• Speed includes direction, velocity does not.

• Speed does not include direction, velocity does.

• Both speed and velocity include direction.

• Neither speed nor velocity include direction.

Which of the following is a correct unit for speed in the metric system?

If a car travels 150 km in 3 hours, what is its average speed?

• 50 km/h

• 45 km/h

• 53 km/h

• 150 km/h

Which of the following best describes velocity?

• The distance an object travels per unit time

• The speed of an object in a given direction

• The total time taken to travel a distance

• The change in speed over time

What is the formula for average speed?

Which of the following is NOT a correct SI unit for velocity?

Tags

NGSS.MS-PS3-1

If a runner completes a 400 m lap in 50 seconds, what is their average speed?

• 8 m/s

• 0.125 m/s

• 50 m/s

• 400 m/s

If a cyclist travels 20 km north in 1 hour, what is their velocity?

• 20 km/h

• 20 km/h north

• 1 km/h north

• 20 m/s north

Which of the following would cause a change in velocity?

• Changing speed only

• Changing direction only

• Changing speed or direction

• Keeping speed and direction constant

A car moves at 60 km/h for 2 hours. How far does it travel?

• 30 km

• 60 km

• 120 km

• 100 km