<span>The force will be zero if the wagons are moving at a constant speed (i.e. not accelerating), as there is no frictional force to overcome. If the wagons are accelerating, the force will be proportional to the acceleration, and 20% of the force applied by A.</span>
Every body continues in a state of rest or uniform motion in a straight line unless acted on by a resultant external force. That's approximately Newton's first law of motion.
So, the velocity of something tends to remain the same, unless an external force changes it. This is sometimes called "inertia". A body at rest, as in with "no velocity" will tend to remain at rest, unless there's a force on it. inertia again.
Answer:
B) 10 minutes
Explanation:
When the size of the problem is 100 then it takes 1 minute to solve

So, when the size of the problem is 1 then it takes the following minutes

For when the size of the problem is 1000 we have

So, it will take 10 minutes to solve the algorithm of size 1000
Answer:
The dilation of time.
The falling of objects.
The changing of paths of light.
Explanation:
I have explained in the image attached below.
From the explanation, the correct ones are;
The dilation of time.
The falling of objects.
The changing of paths of light.
The answer is the third one down. New evidence may contradict the old evidence of a certain theory.