Question

students want to design an experiment to study gravity. they decide they will drop four objects with the same mass from the top of their schools bleachers. they will time how long each object takes to reach the ground. how can they improve confidence in the experiments results? (1 point) randomly select the order in which the objects are dropped. let a different student time the drop of each object. drop each object 10 times and use the average of each objects fall times. drop all four objects at once.

Explanation:

• Randomly selecting the order of dropping objects reduces bias from order - related factors (e.g., wind changes over time).
• Having different students time each drop can introduce more human - error variability (different reaction times of students).
• Dropping each object 10 times and taking the average reduces the impact of random errors (e.g., a one - time gust of wind affecting a single drop).
• Dropping all four objects at once makes it difficult to accurately time each object's fall.

Answer:

C. Drop each object 10 times and use the average of each object's fall times.