what is conservation of velocity?
399478
as long as mass is constant, the velocity of a body is constant. Newton's law.\n\nBut the word "conservation" does not mean constant. \n\nIf the velocity is transfered with out change, we can say it is conserved. This happens only in very few cases; elastic collision of equal masses.\n\nBut to cover that there is conservation of momentum.
109422
This is pretty close to an question that was asked previously.\n\nI presume you mean Velocity= Distance/time, and you want the derivatives with respect to time t (for velocity in a 1-dimensional space; velocity strictly speaking is a vector and needs magnitude and direction). \n\nThe first derivative of velocity with respect to time is called acceleration. The second derivative of velocity with respect to time is called the boost or jerk. \n\nYou have not stated if distance D is a function of time or not. Assume that D is a constant. \n\nThen dV/dt=-D/t^2 is the acceleration\n\nAnd d/dt(dV/dt)=2D/t^3 is the boost.
765291
Conservation of energy and of momentum are different things. Momentum is always conserved in a collision. \n\nIf the collision is perfectly elastic, kinetic energy is also conserved. Billiard balls are very nearly perfect. (I guess nothing is exactly perfect in this world.)
338219
the resistive force that air will exert upon an object moving through it at a given velocity.\n\nthe equation is Drag= 1/2 cpav2 (squared)\n\nc is a constant.\np is the density of the fluid (air in this case)\na is the cross sectional area of the object\nv is the velocity of the object.
978564
Velocity is the speed an object is moving at and the direction that it is moving in. For example, if you said that a car was going 60 mph due east you would be talking about velocity; if you merely said that the car was moving 60 mph you would just be talking about its speed. You would measure acceleration by measuring an objects speed at two different times (the closer the more accurate your number estimate), subtract the difference and divide by the time interval. For example, if at time=1, the speed of an object was 5 meters per second, and at time=4 the speed was 14 meters per second you would do the following: (14-5)/(4-1)=9/3=3 meters/sec^2.\nRegarding  your last question, if the skateboard was going 5mph when you started your experiment, then your initial speed would b 5mph.
708999
Find the inertia.  Find the change in inertia.  Use conservation of momentum to  find the new speed. etc,.
770931
yes the kinetic velocity is incresed....due to the phase change...this is why we give energy for the liquid to vapourise to increase the energy of each molecule and seperate them ...for the motion to be faster
142999
Momentum refers to the quantity of the motion that the object have.....It is mainly " MASS IN MOTION "..It depends on mass and velocity....momentum = mass * velocity...or momentum(P) = mass(M) * velocity(V)....Its is a vector quantity...
700119
Velocity:\nv=d/t\n\nd=distance\nt=time\n\nAcceleration:\na=(vf^2-vi^2)/2d\n\nvf=final velocity\nvi=initial velocity
876839
speed is velocity - both measured as the change of distance divided by the change in time. You may mean the angular velocity, how fast is it spinning; or how fast the air is moving around the center (relative to the air not spinning); or how fast the tornado is moving across the ground.
733773
Zero.  If the velocity is constant, acceleration is 0.
200570
the velocity of the ambient
43971
Da_vinci's answer is partly correct but it confuses force, power and energy. Energy is the integral of power over time, or more simply, if power is constant, energy is power * time. Kinetic energy can also be expressed as .5*M*V^2, M being mass and V being velocity.\nDa_vinci's example illustrates that since velocity is measured with respect to some reference, so is kinetic energy. Without a reference an accelerated object receives a velocity change but the kinetic energy change cannot be defined. Similarly, without a reference, decelerating the object requires application of a force but does not recover any energy.
657144
Velocity is a vector quantity, meaning that it consists of both a magnitude AND direction component.\nFor two vectors to be equal, both their magnitudes and directions must be equal.\n\nFor two cars to habve the same velocity, their speed (the magnitude of their velocity) and the direction of travel must both be equal.
93067
In simple terms, velocity is the measure of displacment compared to time.  Not distance!  Distance is how far an object has moved period.  Displacment is how far an object has traveled from it's initial position.  Therefore, the derivative of the position function (with respect to time "dt")  is the function of velocity! dx/dt
515678
The conservation law states that energy is neither created nor destroyed but merely changes type. So, when an object slows down it has less kinetic energy and that energy is converted to heat by way of friction.
843634
Average velocity is the total displacement over total time. Since it is zero, displacement is zero.