"Speed" is the name we give to the magnitude of velocity ... the 'size' of the
velocity, without its direction.
Part of every velocity is a speed. Speed is the size of the velocity.But the velocity also has a direction, which the speed doesn't.'30 mph North' and '30 mph West' are the same speed but different velocity.
Velocity only describes speed and direction, while speed alone describes the rate of motion of an object without considering direction. Time is not directly a part of the definition of velocity, but it is a factor in determining the displacement traveled at a certain velocity.
Velocity of a moving body is its rate of DISPLACEMENT with respect to time. But speed is distance traveled per unit time. The difference between speed and velocity is that velocity has a direction. 30mph is a speed. 30mph due north is a velocity. Well not really because 'north' is arbitrary but you get the idea. Displacement is both a distance and direction. 30 miles is a distance. 30 miles to the north is a displacement. A two part quantity like velocity or displacement is called a 'vector quantity'. A one part quantity (speed, distance etc) is called a 'scalar quantity'.
Yes. Acceleration is the change in velocity, and velocity is a vector, which means it has direction. Because an object undergoing uniform circular motion is changing direction, it is changing velocity, and thus, accelerating.
Technically, the term velocity means how fast and in what direction is a given object moving; knowing the velocity is certainly part of calculating how long it takes to get from one place to another, but you also have to know how far apart those places are. If two locations are 100 miles apart, and you can drive that distance at 50 miles per hour, then the trip takes two hours.
Part of every velocity is a speed. Speed is the size of the velocity.But the velocity also has a direction, which the speed doesn't.'30 mph North' and '30 mph West' are the same speed but different velocity.
The speed of an object moving in a particular direction is called the velocity and it's a vector, that is, it has magnitude and direction. Speed is the scalar part of velocity.
Velocity only describes speed and direction, while speed alone describes the rate of motion of an object without considering direction. Time is not directly a part of the definition of velocity, but it is a factor in determining the displacement traveled at a certain velocity.
Not exactly. Let me explain:Speed is one part of velocity. If you're measuring velocity, you have to know thespeed. But that's not all. For velocity, you also have to know the direction.
Velocity of a moving body is its rate of DISPLACEMENT with respect to time. But speed is distance traveled per unit time. The difference between speed and velocity is that velocity has a direction. 30mph is a speed. 30mph due north is a velocity. Well not really because 'north' is arbitrary but you get the idea. Displacement is both a distance and direction. 30 miles is a distance. 30 miles to the north is a displacement. A two part quantity like velocity or displacement is called a 'vector quantity'. A one part quantity (speed, distance etc) is called a 'scalar quantity'.
The Earth's rotation
Yes. Acceleration is the change in velocity, and velocity is a vector, which means it has direction. Because an object undergoing uniform circular motion is changing direction, it is changing velocity, and thus, accelerating.
Yes. Gamma Rays are photons (like visible light, just at another part of the electromagnetic spectrum). They travel with constant velocity at the speed of light (only in a vacuum). Although the original speed of the gamma ray varies.
The '500 km/hr' part is certainly an example of speed. Speed = Distance/Time.The inclusion of a direction makes this an example of velocity.
The part about the spaceship going with the speed of light is not real. I don't understand the earlier part of the question.
A vector quantity not only has a size, it also has a direction. Velocity is a vector quantity. "30 mph north" and "30 mph east" are different velocities. "Speed" is a part of velocity ... its size alone, without its direction, so speed is not a vector quantity.
Technically, the term velocity means how fast and in what direction is a given object moving; knowing the velocity is certainly part of calculating how long it takes to get from one place to another, but you also have to know how far apart those places are. If two locations are 100 miles apart, and you can drive that distance at 50 miles per hour, then the trip takes two hours.