Predictions
(You might want to edit these answers to your own liking )
First answer: Net force is calculated by adding all of the individual forces on an object.
Step-by-step explanation: Net force is calculated by adding all of the individual forces on an object. For example, to calculate the net force on an airplane, add the lift, weight, thrust, and drag. When opposing forces, such as lift and weight, are present, they must be subtracted. During takeoff, the net force on an airplane is forward and up. During landing, it is backwards and down.
Second answer: When there is a net force on an object, it causes the object to accelerate in the direction of the net force; it is not the same as the direction of the motion unless the object is going in a straight line.
Explanation: If an object has a net force acting on it, it will accelerate. The object will speed up, slow down or change direction. An unbalanced force (net force) acting on an object changes its speed and/or direction of motion. An unbalanced force is an unopposed force that causes a change in motion.
(You're going to have to do the chart on your own, sorry. But i'll do the conclusions and extension. )
PAGE 2
(CONCLUSIONS)
First answer: If two forces act on an object in the same direction, the net force is equal to the sum of the two forces.
Second answer: If two forces act on an object in opposite directions and they don't exactly cancel, what is left over is the net force (the difference in the forces).
Third answer: If an object has a net force acting on it, it will accelerate. The object will speed up, slow down or change direction. While an unbalanced force (net force) acting on an object changes its speed and/or direction of motion.
Extension:
The simple answer, all are contributing a 3. Or 600N/3=200N.
But because why not, let's say ones pushing incorrectly.
If that happened that would make for all of them pushing 600N
Because one is Adding -600N and the other two are adding 600N a piece. Or -600N+2*600N=600N
I hope this helped you!