Two different masses are droped from same heights. When these just strike the ground, the following is same :

Options

A. kinetic energy
B. potential energy
C. linear momentum
D. acceleration

Answer

To solve the question, we need to analyze the physical quantities involved when two different masses are dropped from the same height. We will evaluate each option provided in the question to determine which quantity remains the same when the masses strike the ground.

### Step-by-Step Solution:

1. **Understanding the Scenario**:
- Two different masses (let's call them m1 and m2) are dropped from the same height (h).
- We need to analyze what happens to various physical quantities when they strike the ground.

2. **Kinetic Energy (KE)**:
- The formula for kinetic energy is given by:
\[ KE = \frac{1}{2} mv^2 \]
- Since the masses are different (m1 and m2), the kinetic energy will also be different when they strike the ground, as it depends on both mass and velocity.

3. **Potential Energy (PE)**:
- The potential energy at the height (h) is given by:
\[ PE = mgh \]
- Again, since the masses are different, the potential energy will differ for m1 and m2 when they are at height h.

4. **Linear Momentum (p)**:
- The linear momentum is defined as:
\[ p = mv \]
- Since the masses are different, the linear momentum will also be different when they strike the ground.

5. **Acceleration (a)**:
- The acceleration due to gravity (g) is constant for both masses when they are in free fall. It does not depend on the mass of the object.
- Therefore, the acceleration of both masses will be the same when they strike the ground.

6. **Conclusion**:
- From the analysis, we conclude that the only quantity that remains the same for both masses when they strike the ground is the acceleration due to gravity (g).

### Final Answer:
The correct option is **D: Acceleration**.

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