Understanding Speed

The video tutorial introduces the concept of speed, explaining it as the rate of covering distance over time. It uses the example of two cars to illustrate the difference in speed. The tutorial then introduces Sammy the Super Snail to demonstrate speed calculation, showing how distance and time are used to determine speed. Examples are provided, including Sammy covering different distances in varying times. The video concludes by discussing how speed can be measured in different units depending on the context, such as meters per second or centimeters per year.

What is the primary difference between a speeding car and a non-speeding car?

• The non-speeding car covers the same distance in more time.

• The non-speeding car covers more distance in less time.

• The speeding car covers the same distance in less time.

• The speeding car covers more distance in the same time.

What two factors are needed to calculate speed?

• Distance and time

• Time and velocity

• Velocity and acceleration

• Distance and acceleration

If Sammy covers 10 meters in 10 seconds, what is her speed?

• 10 meters per second

• 2 meters per second

• 1 meter per second

• 0.5 meters per second

How does Sammy's speed change when she covers the same distance in 5 seconds?

• Her speed is halved.

• Her speed remains the same.

• Her speed doubles.

• Her speed triples.

What is the speed of Sammy when she covers 10 meters in 5 seconds?

• 3 meters per second

• 2 meters per second

• 5 meters per second

• 1 meter per second

Why might scientists prefer using meters per second as a unit of speed?

• It is easier to calculate.

• It is the most commonly used unit.

• It is a standard unit in scientific measurements.

• It is the fastest unit.

What unit might be used to measure the speed of tectonic plates?

• Inches per minute

• Centimeters per year

• Kilometers per hour

• Meters per second

What happens to the speed if the distance remains constant but the time taken decreases?

• The speed decreases.

• The speed remains constant.

• The speed increases.

• The speed becomes zero.

Which of the following is NOT a factor in determining speed?

• Acceleration

• Time

• Distance

• Velocity

What is the formula for calculating speed?

• Speed = Distance x Time

• Speed = Distance / Time

• Speed = Time / Distance

• Speed = Distance + Time