Why would an object with a higher velocity have a higher Reynold number?
954123
The Reynolds number is an adimensional value. It is calculated by:\n\nRe = (d*v*L)/ u\n\nwhere v stands for velocity.\n\nTherefore, the Reynolds number is proportional to the velocity! So the higher the velocity the higher the Reynolds.\n\nThe other letters: d stands for density, L for a characteristic length and u is the viscosity
258318
This has to do with the laws of gravity... a larger object will attract a smaller one to it.  \n\nits not a constant for all objects however, it depends of the mass of the object being attracted.
801335
a=V^2/r, so the larger the radius the larger the acceleration and since F=ma and assuming mass stays constant the force must increase also
760918
Both these answers are missing the whole truth.\n\nAcceleration is a vector quantity, so it has a magnitude and a direction. The sign of a vector quantity indicates the direction that the vector is pointing.\n\nAcceration = dV/dT or change in velocity/change in time\n\n\n Positive acceleration means that the change in velocity over change in time is positive, so the object is accelerating away from you with an increasing velocity or the object is coming towards you and it's slowing down.\n\nNegative acceleration is the opposite. Either it's moving away and the change in velocity over change in time is negative (e.g. it's slowing down) or it's change in velocity over change in time is positive but it is accelerating toward you.
78760
a basketball will bounce the highest of these objects because it is mad of a harder material whose material will retain its shape more readily than the others. also it has higher air pressure inside.
162388
the max speed is higher on the 290.  the engine is also bigger.
898375
I know the answer is in my basic physics book.  I would have to look it up.  You should too.
26747
ok.  call the downward translational velocity of the whole thing v.  this means that the tangential velocity at the edge of the poles (at the radius r) is equal to v.  the reason for this is that the strings are wound AROUND THE POLES, so this winding and the condition that the string has to unwrap for the thing to move, sets the angular velocity w = v/r.\n\nnow, if you look at the main wheel part, the angular velocity has to be equal to the angular velocity of the poles, since they are one solid piece.  however, as you note the radius of the wheel R > r.  so, the fact that v / r = w = V / R implies that V > v.  in other words, the motion of the outer edges of the wheel is faster than the motion of the outer edges of the rods.\n\ni think you are getting confused by saying that V is the translational velocity of the wheel.  it's not.  v is the translational velocity of the wheel, and of the rods.  the fact that the string is wound *around the rods* and not around the wheel sets the angular velocity of the whole apparatus equal to v/r.  V, the tangential velocity of the outer edges of the wheel, is much faster than the translational velocity.\n\nthat clear?
144969
It's something along the lines that mass increases with speed. The closer you get to the speed of light the more mass you achieve, which requires more energy to move you. This increases exponentially, always getting closer to the speed of light, until you are essentially immovable, you can't get any heavier so can't move any faster. I heard this explained in a college class once and probably totally got it wrong, but it's in that vein.
368139
If the object has onboard power, then the speed is not really relevant to whether it will leave the atmosphere, just when. If you just fire an object upwards and it has no self-propulsion, however, then you need to calculate the change in gravitational potential energy (find out how far the atmosphere extends) and add the energy lost to air friction (this depends on velocity). Equate this to the object's initial kinetic energy and solve for initial velocity v. Your initial velocity will have to be larger than this.
648382
In the vacuum light can get the high speed.\nAfter that you have gas, liquid an then solid.\nThis is because the density of matter. The more dense the matter is the more athoms there are, making it harder for the light to pass.
523715
Higher Velocity will cause lower pressure and larger volume that will decrease its temperature. Volume, temperature and pressure are all physically related in gas.
279138
There can be two reasons:\n\n1.  There is an external force acting on the object.  If the force has a component in the direction of the motion, it would speed up in the direction; if the force has a component against the direction of motion, the object would slow down in the direction of motion.\n\n2.  The frame from which you are viewing the object is declerating or accelerating.  Accordingly, there would be a pseudo force acting on the body, making it seem to decelerate (slow down) or accelerate.
172926
The others gave the correct answer overall, but got the details wrong.  All objects accelerate, when dropped in free fall near the surface of the earth, at 9.8 meters/second/second (not 9.8 inches/s or 9.8 miles/hour).\nThe reason heavier object don't fall faster is that, although they have more weight, i.e. more gravity pulling on them, they also have more mass, i.e. more "inertia", which is the resistance of objects to being accelerated.  The two things exactly cancel out; isn't that convenient?  \n\nBtw, the reason why they cancel out, that is, the reason why the mass that shows up in the formulas for gravity is the same quantity that shows up as inertia in Newton's laws, was not fully solved until Einstein, but the fact that they do was known to Galileo.
340597
there's not too much difference, other than  the density which causes the drag coefficient. however, water has surface tension, which may be slightly important in causing greater drag
771396
Because gravity is the same - so it has the same effect on both objects.  The larger object will strike the ground with a greater force, but both objects will accelerate at the same rate.
212447
it's like the speedometer of a vehicle. the higher the reading the faster it is...