Answer:
I would say a pond
Explanation:
A pond is more still than an ocean, therefore you could see your reflection better
Contour lines are lines that signifies the elevation on a mountain or hill
Given :
Two forces act on a 6.00-kg object. One of the forces is 10.0 N.
Acceleration of object 2 m/s².
To Find :
The greatest possible magnitude of the other force.\
Solution :
Let, other force is f.
So, net force, F = 10 + f.
Now, acceleration is given by :

Therefore, the greatest possible magnitude of the other force is 2 N.
Hence, this is the required solution.
I think you need to solve them