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A student investigates how ramp angle affects the speed of a toy car. The car is released from a different starting point in each trial. Which conclusion is appropriate?

Answer and explanation

Correct answer: Starting point is an uncontrolled variable

The starting point can affect travel distance and speed so changing it makes the test unfair. It should be the same in every trial.

Related tags

VariablesRampToy CarUncontrolled VariableVariables In An ExperimentExploration: Entering The World Of Secondary ScienceExploration Entering The World Of Secondary ScienceScience

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