CLEAN : Catalan leader attends Barcelona pro independence rally

What is the basic concept introduced in the first section?

• Speed

• Distance

• Time

• Acceleration

How is speed typically measured?

• In seconds

• In kilometers

• In meters per second

• In meters

Which of the following is NOT a unit of speed?

• Meters per second

• Miles per hour

• Kilometers per hour

• Seconds per meter

Why is speed important in transportation?

• It impacts the color of the vehicle

• It influences the vehicle design

• It affects travel time

• It determines the fuel efficiency

In which context is speed crucial for safety?

• In painting

• In cooking

• In sports

• In driving