Exploring the Concept of Speed in Motion

What physical quantity tells us how fast something is moving?

• Distance

• Acceleration

• Speed

• Time

What two factors are needed to calculate the speed of an object?

• Distance and mass

• Time and acceleration

• Speed and velocity

• Distance and time

If a car travels 420 meters in 30 seconds, what is its speed?

• 18 meters per second

• 14 meters per second

• 12 meters per second

• 16 meters per second

Which car is moving faster if one covers 420 meters in 30 seconds and another in 40 seconds?

• The car that takes 40 seconds

• Both cars are moving at the same speed

• Cannot be determined

• The car that takes 30 seconds

What is the speed of a car that covers 420 meters in 20 seconds?

• 20 meters per second

• 23 meters per second

• 21 meters per second

• 22 meters per second

Which of the following is NOT a unit of speed?

• Meters per minute

• Miles per hour

• Kilometers per hour

• Meters per second

What does the term 'average speed' refer to?

• The speed at a specific moment

• The total distance divided by the total time

• The speed at the start

• The highest speed reached

Can we say that a car's speed is constant if it covers 420 meters in 30 seconds?

• No, it is the instantaneous speed

• Yes, it is constant

• No, it is the average speed

• Yes, it covers 14 meters every second

What might cause a car's speed to vary over a distance?

• None of the above

• Constant speed

• Changes in speed

• Changes in direction

How is average speed calculated?

• Total distance divided by total time

• Total time divided by total distance

• Total distance minus total time

• Initial speed plus final speed