Two idential solid balls, one of ivory and the other of wet caly, are dropped from the same height on the floor. Which one will rise to a greater height after striking the floor and why ?

Options

A. ivory ball will rise to a greater height than wet clay ball.
B. ivory ball will rise to a lesser height than wet clay ball.
C. both balls will rise to the same height.
D. data is insufficient.

Explanation

To determine which ball will rise to a greater height after striking the floor, we need to analyze the properties of the two materials: ivory and wet clay.

### Step-by-Step Solution:

1. **Identify the Materials**: We have two identical solid balls: one made of ivory and the other made of wet clay.

2. **Understand Elasticity**: Elasticity is the ability of a material to return to its original shape after deformation. Ivory is known to be a highly elastic material, while wet clay is not elastic and tends to deform permanently upon impact.

3. **Drop the Balls**: Both balls are dropped from the same height onto the floor. Upon impact, they will experience a force due to the collision with the floor.

4. **Analyze the Impact**:
- **Ivory Ball**: When the ivory ball strikes the floor, it compresses slightly but quickly returns to its original shape due to its elasticity. This restoration generates a force that propels the ball upward.
- **Wet Clay Ball**: In contrast, the wet clay ball will deform significantly upon impact and will not return to its original shape. The lack of elasticity means that there is no restoring force to push it back up.

5. **Determine the Height of Rebound**:
- The ivory ball, due to its elastic properties, will rebound to a certain height after the impact.
- The wet clay ball, due to its inelastic nature, will not rebound significantly and will remain close to the ground.

6. **Conclusion**: Since the ivory ball is more elastic and can generate a restoring force after impact, it will rise to a greater height compared to the wet clay ball, which lacks this property.

### Final Answer:
The ivory ball will rise to a greater height than the wet clay ball after striking the floor due to its higher elasticity.

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