Praxis 5005 Practice Test Practice Question
In an experiment, a student observes an object as it travels in one direction along a straight path. Which TWO of the following measurements does the student need to calculate the average speed of the object?
Correct Answer: B,C
Rationale: To calculate average speed, the essential components are distance and time. Option B, the distance traveled, is crucial as average speed is defined as total distance divided by total time. Option C, the elapsed time, is equally important since it provides the duration over which the distance is measured.
Option A, the object's mass, is irrelevant to speed calculations as mass does not affect how fast an object moves. Option D, environmental temperature, also does not directly influence average speed in this context, making it unnecessary for the calculation. Thus, only distance and elapsed time are needed.
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