Travel at one speed for a period time e.g on a 30 mph road you would travel at a constant speed of 30 mph
NO, all hings were not travel at constant things but some things r travel in constant speed for example solar system
You have a constant speed.
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?
The constant speed at which light travels is 300M m/s.
If you know that the speed is constant, just divide the distance by the time it takes to travel that distance.
Yes.
Yes.
When people talk about Constant Speed, they mean non stopping speed at the same speed. For example if someone runs 10 miles at the same exact speed every day, people would say that he/she runs with constant speed.
Of course not. Just to begin travel, speed must increase from zero to something, and in order to end travel, speed must decrease from something to zero.
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.
yes
A car with a constant speed of 8 m/s will travel 8m in 8s.