If the vertical speed is constant, that means there is zero vertical acceleration.
If the vertical acceleration is zero, that means the net vertical force on the object
is zero. If the net vertical force on the object is zero, that means the downward
force (weight) and upward force (air resistance) are equal.
When forces are balanced, the object at rest will remain at rest, while the object in motion will continue to move at a constant velocity. This is due to Newton's first law of motion, which states that an object will remain at rest or in motion with constant velocity unless acted on by an unbalanced external force.
The total mass remain constant.
At constant temperature and pressure the ratios are equal.
The escape velocity of a black hole is equal or greater than the speed of light, so light cannot escape
Assuming that you're referring to an object that is accelerating towards a massive body by means of gravitational attraction... When the force of frictional air resistance equals the opposing force of gravity, the net force on the object equals zero, and acceleration will cease. It is called terminal velocity, and the object will remain at this velocity until some new event happens.
Velocity is a constant traveling speed. Acceleration is increasing traveling speed (variation of speed over time)
If its speed of fall is no longer changing, then its acceleration is zero. That tells you that the forces on it must be balanced, so the upward force of air resistance must be exactly equal to the downward force of gravity.
If the chair is moving at a constant velocity, the force of friction is equal and opposite to the force you are exerting on the chair. This is to maintain the equilibrium of forces acting on the chair.
poo sucks fat dicks
The weight exceeds the force of air resistance, but as the speed increases the air resistance increases, so the net force (weight - air resistance) falls. When the difference becomes zero the acceleration ceases and you have terminal velocity.
Light is refracted and reflected by a (glass) prism Light is refracted and reflected by a raindrop
Velocity is a vectorial quantity, speed with a direction.
Momentum is a vector quantity that is proportional to velocity. The direction of momentum is the same as the direction of velocity, but momentum includes the mass of the object in addition to its velocity.
Zero relative velocity to another object, sure no problem. Zero absolute velocity, not possible as there is no absolute reference to compare to.
The units are the same (metres per second) except that the velocity also has the direction of motion associated with it.
If you mean +P, the difference is velocity.
so scientists can compare result