What happens to the force acting on an object if the acceleration stays constant but mass doubles?A.It doublesB.It is halvedC.It stays the sameD.There is not enough information to determine what will happen to the force.

The correct answer is **A. It doubles**.

### Explanation:

According to Newton's second law of motion, the force \( F \) acting on an object is given by the equation:

\[
F = m \cdot a
\]

where:
- \( F \) is the force,
- \( m \) is the mass of the object, and
- \( a \) is the acceleration.

If the acceleration \( a \) remains constant and the mass \( m \) doubles, the force \( F \) will also double. This is because force is directly proportional to mass when acceleration is constant. So, if the mass changes from \( m \) to \( 2m \), the force will change from \( F = m \cdot a \) to \( F = 2m \cdot a \), which is double the original force.

### Additional Related Questions:

1. What happens to acceleration if force stays constant but mass doubles?
2. How does Newton's second law explain the relationship between mass and force?
3. Can you provide examples of scenarios where both mass and force change?
4. How would the force change if both mass and acceleration are doubled?
5. What units are used to measure force, mass, and acceleration in the SI system?

### Tip:
Always remember that in Newton's second law, force and mass are directly proportional if acceleration is constant. This relationship can help solve many physics problems involving motion.

Explore how force acting on an object changes when acceleration stays constant but mass doubles. Newton's second law of motion, F = m * a, explains this direct relationship. Suitable for high school physics students.

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