Final answer:
When an object is released from rest on a planet with no atmosphere, its acceleration will be greater than Earth's acceleration.
Step-by-step explanation:
When an object is released from rest on a planet that has no atmosphere, the acceleration of the object will be greater than Earth's acceleration. On Earth, the acceleration due to gravity is about 9.8 m/s², but this value varies on different planets. When there is no atmosphere to provide air resistance, the object will experience a higher acceleration due to the planet's gravity.