Placing discs on the car increases its mass, which, according to Newton's second law (F=ma), would result in a decrease in acceleration for the same applied force from the hanger. Consequently, the car would accelerate more slowly than in the previous trials, assuming the tension in the string remains constant.
Students are using the experimental setup shown in the image in which the two ends of a string are attached to a car and to a hanger. The students conduct three trials in which they place metal disc's on the hanger to manipulate the force applied to the car. As a result, the car accelerates along the table while two probes collect motion data. On the fourth trial of this experiment, a student places some disc's on the car by mistake. In 1-2 sentences, explain how this would change the acceleration or velocity?
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