Question

velocity and acceleration quick check
students are going to conduct an experiment to study the effect of a net force applied to an object on the object’s motion. in each trial of the experiment, the students will apply a net force on the object. they also need to take two other measurements. what are the other quantities they should measure in each trial of the experiment? (1 point)
○ velocity and time
○ mass and acceleration
○ acceleration and time
○ mass and velocity

Explanation:

To study the effect of net force on motion, Newton's second law ($F = ma$) is relevant. The experiment applies net force, so to analyze the effect, we need the object's mass (to see how force relates to acceleration) and acceleration (since force causes acceleration). Let's analyze each option:

• "velocity and time": Velocity and time don't directly relate to the effect of force on motion in the context of Newton's second law here.
• "mass and acceleration": Mass is the object's property, and acceleration is the result of net force (from $F = ma$). Measuring these along with net force helps study the relationship.
• "acceleration and time": Time alone isn't key here; we need mass to relate force and acceleration.
• "mass and velocity": Velocity isn't the direct result of force in the way acceleration is (force causes acceleration, which changes velocity).

Answer:

B. mass and acceleration