It depends on the motor used to run the clock.
An electric motor can drive the second hand at constant velocities. A mechanical motor has a little pendulum in it. It swings back and forth once per second, and every time it swings it moves the second hand.
The speed at which something travels depends on its acceleration and motion. Objects can travel at various speeds, from slow velocities like walking speed to high velocities like the speed of light. Speed is typically measured in meters per second or miles per hour.
Such an object is said to travel at a constant speed. If it doesn't change direction, it is also said to travel at constant velocity.
All photons travel at the same speed in a vacuum, which is the speed of light, but their velocities can vary when passing through different mediums.
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 speed of light, which is approximately 186,282 miles per second (299,792 kilometers per second) in the vacuum of space, is a constant speed at which light and other forms of radiation travel. This speed is denoted by the symbol "c" in physics.
The speed at which something travels depends on its acceleration and motion. Objects can travel at various speeds, from slow velocities like walking speed to high velocities like the speed of light. Speed is typically measured in meters per second or miles per hour.
No, the average velocity is calculated as the total displacement divided by the total time taken to travel that distance. It is not simply the mean of the initial and final velocities.
Such an object is said to travel at a constant speed. If it doesn't change direction, it is also said to travel at constant velocity.
All photons travel at the same speed in a vacuum, which is the speed of light, but their velocities can vary when passing through different mediums.
Acceleration is zero velocity is constant at 8m every second acceleration is the gradient of velocity and the gadient of a constant = 0
3
Speed is constant. Acceleration is zero.
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 speed of light, which is approximately 186,282 miles per second (299,792 kilometers per second) in the vacuum of space, is a constant speed at which light and other forms of radiation travel. This speed is denoted by the symbol "c" in physics.
About 10-70 km/second or 6.2-43.5 miles/secondFor comparison:Bullets travel slower than 2 km/second or 1.2 miles/second.Low earth orbital velocity is about 7.8 km/second or 4.8 miles/secondGeosynchronous orbital velocity is about 3 km/second or 1.9 miles/secondHigh explosive detonation wave velocities are about 5-10 km/second or 3.1-6.2 miles/secondNuclear explosive detonation wave velocities are about 300 km/second or 186.4 miles/second
The speed of light in air is approximately 350 meters/second. It is not constant; it depends on pressure, temperature, and humidity.
1 meter/second/second in the same direction of travel