see speed cannot de negative
se
speed = distance / time
and
neithr distance nor time can be negative
they r always positive
so speed cannot be negative
but velocity can be negative
speed cannot as it is just a magnitude, however as velocity relates both magnitude and direction, and direction can be negative, technically you can have a negative velocity.
Yes - for example, if an object moves in a circle.
Tachyon, meaning swift particle, was the name given by Dr. Feinberg at M.I.T. to a theoretical particle which travels faster than the speed of light. According to modern physics, no particle can go faster than the speed of light. To entertain the notion of a faster-than-light particle, one must step into a theoretical world where time travels backward and objects have negative mass.
In that case, basically no force acts on the particle, and the particle moves at a constant speed. This constant speed may, or may not, be zero.
The particle speed increases.The energy increases; the speed increases.
speed cannot as it is just a magnitude, however as velocity relates both magnitude and direction, and direction can be negative, technically you can have a negative velocity.
an alpha particle
beta particle
Yes - for example, if an object moves in a circle.
Speed in science means vector (direction and velocity). Any force which lessens the vector can be considered negative speed. A spacecraft's retro rockets are a good example.
Light is currently considered to be the fastest known particle(s) in existence. There are theoretical particles that can function well past the speed of light. One example of such theoretical particle is the Tachyon.
No. The more energy the accelerator can give the particle, the closer the particle can approach to the speed of light, but it can never reach exactly that speed.
In that case, basically no force acts on the particle, and the particle moves at a constant speed. This constant speed may, or may not, be zero.
The particle speed increases.The energy increases; the speed increases.
Tachyon, meaning swift particle, was the name given by Dr. Feinberg at M.I.T. to a theoretical particle which travels faster than the speed of light. According to modern physics, no particle can go faster than the speed of light. To entertain the notion of a faster-than-light particle, one must step into a theoretical world where time travels backward and objects have negative mass.
No particle can reach the speed of light. Mass increases with speed, and the particle would become infinitely massive as it came closer to the speed of light.
The rate of change is often with respect to time t. suppose that d denotes the displacement of a particle, at time t, then you can find the speed with this formula:d=rt, then to solve for r we divide both sides by t and have d/t=rIn mathematics, it is useful to distinguish between velocity and speed. First, when considering motion of a particle in a straight line, specify a positive direction so that it is a directed line. Then the velocity of the particle is positive if it is moving in a positive direction and negative if it is moving in a negative direction. The speed of the particle is the absolute value of its velocity. In more advanced work, when the velocity is a vector v, the speed is the magnitude |v| of the velocity.