BALANCED FORCES
When two forces acting on an object are equal in size but act in opposite directions, we say that they are balanced forces . a stationary object stays still. ... a moving object continues to move at the same speed and in the same direction.
- <em>BRAINLIEST answerer</em>
A and c
Because it defines the boundaries of the system
D. 980, this is the best answer because 35 x 7 is 980 :)