If anyone ever referred to the "true" velocity of an object, he mis-spoke.
All we can directly measure from the earth is an object's velocity relative to the
earth. And when we have measured the velocities of several objects relative to
the earth, then we can calculate the velocity of one relative to any of the others.
But it's quite correct to observe that there's no such thing as the "true" or "real"
velocity of anything, without reference to something else.
Except for electromagnetic radiation, including light. That speed is always the same
for all observers, no matter who you are, or how you're moving relative to anything
else.
If I'm moving north at 0.3c, and you're moving south at 0.5c, and Mr. Tompkins
is moving west at 0.9c ... all relative to Dallas Texas ... and somebody in Seattle
shines spotlights at all three of us, then each of us measures the light passing
him at the same speed . . . 'c'. Each of us measures the same number.
Makes no sense at all. But it's true.
Velocity is relative to the observer and or objects that are in the area , if your sitting in true zero gravity from your point of view you will be standing still but in-reality your velocity will based on your original thrust. Some one watching you (at a zero velocity) from another location might see you zoom by at the original velocity. So the new question is if that other person has zero velocity and is in zero gravity what time will it be when they look at their watch ? Hmmm
The equation for velocity approaching the speed of light is given by the relativistic velocity addition formula: v = (u + v') / (1 + u*v'/c^2), where v is the relative velocity between two objects, u is the velocity of the first object, v' is the velocity of the second object, and c is the speed of light in a vacuum.
In the early universe there was only Hydrogen and Helium (and a smidgen of Lithium).
Gravity affects all objects in the universe. It is a fundamental force that pulls objects with mass toward each other. The strength of gravity depends on the mass of the objects and the distance between them.
Simple Answer:Relative age dating is usually in the domain of geology, archeology and paleontology. Relative age dating alone does not give the age of an object or the date of an even, just the relative ordering in time.More:The principles of relative age dating can, however, be applied to cosmology. The basic principle is that one uses characteristics of objects to identify whether one object is is older than another, and then arranging them in chronological order.Alone, relative age dating can not be used to determine the age of the universe or anything else, but with some knowledge of absolute age one can arrive at statements like, event B must have come after event A and event A is a known date, so event B must be at an earlier date.For instance, the universe must be older than the Earth. The Earth can be dated to about 4.5 billion years in age, therefore the Universe must be older than 4.5 billion Years. If, one adds to that the one knows that the light from a distant galaxy takes a 10 billion years to reach Earth, then the galaxy, and hence the Universe must be more than 10 billion years old.
To determine the relative velocity between two objects, you can subtract the velocity of one object from the velocity of the other object. This will give you the relative velocity between the two objects.
Velocity
relative velocity is defined as the time rate of change of one object with respect to another object.the relative velocity depends upon the observer i.e.if the velocities of two objects are same then the relative velocity also seems to be equal.
Their position relative to other objects in the universe changes.
The combining of velocities is known as velocity addition or relative velocity. It involves adding or subtracting the velocities of two objects moving relative to each other.
Absolute velocity is the velocity of an object with respect to a fixed point in space, regardless of the motion of other objects. It provides a consistent measure of an object's speed and direction in relation to a stationary frame of reference.
The measure of an object's speed and direction is the object's velocity. Velocity is a vector quantity that includes both the speed (magnitude) and the direction of motion of an object.
Velocity is a measure of an object's speed and direction of motion. It describes how fast an object is moving and in which direction it is moving.
No.Consider a grain of rice and a banana. If you threw these at someone so that they were moving at the same speed, their velocities would be the same.However, you would hardly feel the impact of the grain of rice but the banana would hurt.The force of the impact is a measure of the relative inertia of the two objects.Where two objects are traveling at the samevelocity, the inertia is greater in that object that has the greatest mass.
Velocity addition is used when dealing with two objects moving at different velocities relative to each other. It helps calculate the combined velocity of the objects when seen from a different reference frame.
A frame of reference provides a perspective from which to observe and measure motion. By establishing a fixed point or system of coordinates, it allows for the comparison of an object's position and velocity relative to that frame. This helps to quantify and analyze the movement of objects in a specific context.
Motionless objects and objects moving in a straight line with constant speed both have a constant velocity of zero or a constant velocity in a single direction, respectively. They share the characteristic of having a consistent position relative to a reference point over time.