Inertia is the tendency of objects to keep moving in a straight line. They "want" to go in a straight line, so to speak. However that is changed when a force acts on them. In the case of planets, that force is the gravitational force between the planet and the Sun.
So that's why planets orbit the Sun instead of traveling in a straight line.
Newton's third law states that a body will continue in a state of rest or uniform motion in a straight line unless it is acted on by an external force.
On earth, and just about everywhere else in the universe, there are external forces acting on objects. These include friction, gravity, and magnetism. These forces cause objects to stop travelling in a straight line, and can either speed up, or slow down the object, depending on the circumstance.
NO, all hings were not travel at constant things but some things r travel in constant speed for example solar system
Objects moving at constant speed in a straight line are said to be in equilibrium. That is there is no force acting on them. If a force was acting there would be aceleration and the velocity would change.
No. An object is accelerating if it is changing speed or direction of travel. Since the person in question is running at a constant speed in a straight line, they are not accelerating.
A change in an objects velocity is called acceleration. Velocity is defined as an objects speed of travel AND its direction of travel. Acceleration can change only an objects speed, only its direction or both. If there is no acceleration acting on the object, then the velocity remains constant.
Then the effect is as if there are no forces on it at all, and it moves in a straight line with constant speed.
NO, all hings were not travel at constant things but some things r travel in constant speed for example solar system
Objects moving at constant speed in a straight line are said to be in equilibrium. That is there is no force acting on them. If a force was acting there would be aceleration and the velocity would change.
No. An object is accelerating if it is changing speed or direction of travel. Since the person in question is running at a constant speed in a straight line, they are not accelerating.
A change in an objects velocity is called acceleration. Velocity is defined as an objects speed of travel AND its direction of travel. Acceleration can change only an objects speed, only its direction or both. If there is no acceleration acting on the object, then the velocity remains constant.
Then the effect is as if there are no forces on it at all, and it moves in a straight line with constant speed.
The normal tendency of objects - when no force acts on them - is to move in a straight line, at a constant speed and direction (that is, a constant velocity). However, when there is a force, an object's velocity may be changed. That's what happens to the Moon, as well as to other objects in some orbit. In this case, the force is provided by gravitational attraction from Earth.
The question is inherantly flawed. A car traveling at a constant speed cannot accelerate, if it could it's speed would not be constant. "Constant speed" means that speed is not increasing or decreasing but remain consistent over time. For example, if you cover 10 feet during each second, your speed is constant. "Constant velocity" implies constant speed, but it has an additional constraint: you can't change your direction. If you travel constantly at 10 feet per second in a straight line, then your speed is constant and your velocity is constant. But if you travel constantly at 10 feet per second in a wiggly line (or a circle, or anything not straight), then your speed is constant but your velocity is NOT constant. If you travel at a constant speed but change direction, velocity is changed. Or if you travel in the same direction but change the speed, velocity is changed. Average speed is is easier: distance/time So, your question should read: Why can a car traveling at an average speed accelerate, but a car traveling at constant speed cannot? Or Why am I asking the wrong questions?
That's just a special case of inertia. In general, objects have the tendency to move in a straight line, and at a constant speed, when no force is acting on them.
Straight line at a constant speed = no acceleration
no
You can conclude that the acceleration of the object is not constant.
Constant speed is shown on a graph using straight lines. The straight line indicates that there are no fluctuations with the speed.