Here's how to determine the gravitational acceleration on Planet X and compare it to Earth's:

1. Calculate the gravitational acceleration on Planet X:

* We know:

* Weight (Force of gravity) = 9 N

* Mass = 3 kg

* Using the formula: Weight = Mass × Gravitational Acceleration (g)

* Rearranging to find 'g': g = Weight / Mass

* g = 9 N / 3 kg = 3 m/s²

2. Compare to Earth's gravitational acceleration:

* Earth's gravitational acceleration is approximately 9.8 m/s².

Conclusion:

The gravitational acceleration on Planet X (3 m/s²) is less than that on Earth (9.8 m/s²).