Final answer:
The object is at rest for the first 15 seconds, then starts accelerating and eventually travels at a constant velocity.
Step-by-step explanation:
The motion of the object from 15 to 35 seconds can be described as follows:
- From 15 to 20 seconds: The object is at rest and does not move.
- From 20 to 25 seconds: The object starts accelerating in a positive direction.
- From 25 to 35 seconds: The object travels at a constant velocity.
During this time interval, the object undergoes a change in motion, transitioning from rest to acceleration and then to constant velocity.