Instantaneous
velocity in definition is the average velocity in given particular moment time.
Hence, it underlies the context of each velocity at each occupied time and
space at that particular moment where you are. Moreover, talking about velocity
is vector quantity, which means it both has magnitude and direction. Furthermore,
this positive and negative sign attributed to their number means only the
specific direction in which the object is going. For example in analogy to average
velocity, the initial position of the object at the moment is 2 m/s to the
right then the object suddenly changes his position to 3 m/s to the left as his
final position. Which is, the exact opposite of the former direction then
indicates that the final position is negative, contrary to the initial
direction. Just remember that the negative values connoted on the numbers can
indicate the opposite direction of either the initial position or an object is
downward.
Answer:
-100 kg · m/s
Explanation:
We can find the momentum of an object using the formula:
- p = mv
- where p = momentum (kg * m/s), m = mass (kg), v = velocity (m/s), and p and v are vectors
Let's start by converting the mass of the object to kilograms.
Since the left direction is the negative direction, we know that the velocity of the object is -25 m/s.
Using these variables, we can solve for p in the formula.
- p = mv
- p = (4 kg)(-25 m/s)
- p = -100 kg · m/s
The momentum of the object is -100 kg · m/s.
Answer:
Magnetic field is the strength of magnetism created by a magnet, whereas the magnetic force is the force due to two magnetic objects. The concepts of magnetic field and magnetic force are widely used in fields such as classical mechanics, electromagnetic theory, field theory and various other applications.
Explanation:
Answer:
<em>Container A will weigh more</em>
<em></em>
Explanation:
Both containers are identical, so we assume that they weigh the same.
They both have the same volume, and will contain an equal volume of a material.
Since they both contain water to the top, this means that their volume is fully occupied. But container B contain a block of wood <em><u>floating</u></em> in it.
The fact that the block of wood floats in the water in container B shows that it is less dense than the water around it, and in the container A, this same space is completely filled with water.
What we derive from this is that the portion of space contained by the block of wood in container B is occupied by water in container A, but, in container B, the density of this space is lesser now, since the wood block floats.
<em>Since density is mass per unit volume, and weight is proportional to mass, then we can see that the weight of this volume portion in container B is lesser than that of container A. The consequence is that container A will weigh more than container B because of this extra weight.</em>