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Difficulty: EasyGravity and Free Fall

In a vacuum chamber where there is no air resistance, a 10-pound iron ball and a 1-pound wooden block are dropped simultaneously from exactly the same height. Which of the following statements correctly describes their fall?

  1. A
    The wooden block will hit the ground first because it requires less force to accelerate.
  2. B
    The iron ball will hit the ground first because it has a greater mass.
  3. Both objects will accelerate at the same rate and hit the ground at the exact same time.Answer
  4. D
    The iron ball will hit the ground first because it experiences a stronger downward pull from gravity.

Answer

Both objects will accelerate at the same rate and hit the ground at the exact same time.
In the absence of air resistance, the only force acting on the objects is gravity. Gravity provides a constant acceleration to all objects, independent of their mass. Therefore, both the heavy iron ball and the light wooden block will fall at exactly the same rate and hit the ground simultaneously.

Step-by-Step Solution

1
Identify the environment and conditions.
The objects are dropped in a vacuum chamber, meaning there is no air resistance.
Air resistance is the primary factor that causes objects of different shapes and masses to fall at different rates in everyday situations.
2
Apply the principles of free fall gravity.
Gravity causes all objects to accelerate downwards at a constant rate, regardless of their mass.
The acceleration due to gravity is independent of an object's mass. Although a heavier object has a greater gravitational force acting on it, it also has more inertia, so the resulting acceleration is identical.

Key Concept

In a vacuum, the acceleration due to gravity is constant for all objects, meaning they will fall at the same rate regardless of their mass.
Estimated Time:30s
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Topics

Gravity and Free Fall

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