10
lesson pretestMultiple Choice

Pretest

Question 10 • Physical Science

What is the only force that can act on an object in free fall?

Answer
A
gravity
B
speed
C
air resistance
D
friction

Explanation

In ideal free fall, gravity is the only force acting on the object. Speed describes how fast it moves, not a force, and friction or air resistance would be additional forces from contact or motion through air. The correct choice is gravity.

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