Entry Exam Category: High School Equivalency Exams
Course: General Education Development (GED)
Exam: GED Science and Practice Test
Practice Question
Two people are standing at the edge of a high cliff. One person throws a rock horizontally off the cliff. Which uncontrolled part of this investigation can prevent the rocks from hitting the ground at the same time?
Answer Choices
- A: gravity
- B: mass of the rocks
- C: air resistance
- D: strength of the person
Correct Answer: C
Rationale: Air resistance can affect the horizontal motion of the thrown rock, causing it to hit the ground at a different time than the dropped rock.