easy · Enhanced ACT science
In a physics experiment, a cart of mass m is pushed with a force F. The resulting acceleration a is measured. The student performs three trials:
Trial 1: m = 1.0 kg, F = 5.0 N
Trial 2: m = 2.0 kg, F = 5.0 N
Trial 3: m = 3.0 kg, F = 5.0 N
Which factor serves as the independent variable across these three specific trials?
- The acceleration produced by the cart in motion
- The mass of the cart being pushed in each trial
- The force applied to the cart during the movement
- The friction between the cart and the floor surface
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