Mars's gravity is significantly weaker than Earth's.

Here's the breakdown:

* Earth's gravity: 9.81 m/s² (this means that an object falls at a rate of 9.81 meters per second every second)

* Mars's gravity: 3.71 m/s²

This means that Mars's gravity is about 38% of Earth's gravity. So, if you weigh 100 pounds on Earth, you would weigh about 38 pounds on Mars!