Answer:
unbalanced and contact
Step-by-step explanation:
The two terms that bests describes the net force acting on the sled is an unbalanced and contact force.
Force is a pull or push on a body. We have two main types of forces. Contact forces acts on a body and they must be in touch with it. An example is frictional force.
Non - contact forces acts based on force field and they are not in contact with the body. An example is gravitational force.
- Since the sled is sliding down the road, it is changing velocity and so, unbalanced forces are acting on it.
Therefore, the force on the wagon is an unbalanced and contact force.