Question

an investigation is set up to test newton’s second law of motion. various trials are conducted on the same car. in each trial, forces of different strengths are applied to the same car, and then the acceleration of the car is measured. why is it important to use the same car in each trial of the investigation? (1 point) to keep the force constant to keep the velocity constant to keep the acceleration constant to keep the mass constant

Explanation:

Newton's second - law is $F = ma$. In this experiment, force $F$ is changed and acceleration $a$ is measured. To study the relationship between $F$ and $a$, mass $m$ should be kept constant. Using the same car ensures the mass remains the same.

Answer:

to keep the mass constant