Speed, Stopping Distance & Variables Quiz

What is the independent variable in a fair test?

• What you measure

• What you keep the same

• What you change

• What you record at the end

Which of the following is a dependent variable in the braking distance experiment?

• Height of the ramp

• Length of the ruler

• Braking distance

• Angle of the ramp

What is a controlled variable?

• A variable you forget to include

• Something that is changed to test results

• A variable you measure

• Something kept the same to make the test fair

What is the correct formula for calculating speed?

• Speed = Time ÷ Distance

• Speed = Distance × Time

• Speed = Distance ÷ Time

• Speed = Distance + Time

If a car travels 60 m in 3 seconds, what is its speed?

• 180 m/s

• 20 m/s

• 63 m/s

• 57 m/s

In a graph, what should be on the x-axis?

• The dependent variable

• The title

• The scale

• The independent variable

What must all scientific graphs include?

• Title, legend, footnotes

• Axis titles, title, scale

• Hypothesis, question, abstract

• Photo, units, key

Which of these is the correct total stopping distance formula?

• Stopping distance = speed × time

• Stopping distance = thinking distance + braking distance

• Stopping distance = braking force ÷ time

• Stopping distance = speed – reaction time

What happens to thinking distance when speed increases?

• It stays the same

• It halves

• It decreases

• It increases linearly

If speed triples, what happens to braking distance?

• It triples

• It stays the same

• It doubles

• It increases 9 times