Newton's first law of motion states that when there is no net external force, an object will remain at rest or travel with a constant velocity.
When an object is moving, there is a force of friction resisting the motion, and slowing it down. To maintain a constant velocity, a person must push with a force equal to that of friction, to counteract the frictional force.
Since the pushing force cancels the friction force out, there is no net external force, and so the object moves at a constant velocity
Hope I helped! xx
P.S.: Think this question is more suited to be asked under the "Physics" section
Answer: Decrease, i'm sorry i don't know the other one
Explanation:
Answer:YES
Explanation:A PDA is a type of congenital heart defect. A congenital heart defect is any type of heart problem that's present at birth. If your baby has a PDA but an otherwise normal heart, the PDA may shrink and go away. Some children need treatment to close their PDAs.
Mars and Earth are very different planets when it comes to temperature, size, and atmosphere, but geologic processes on the two planets are surprisingly similar. On Mars, we see volcanoes, canyons, and impact basins much like the ones we see on Earth
