Depends what you're shipping through the pipe.
If it's air or natural gas, very few psi.
If it's crude oil or cookie dough, many many psi.
The speed of anything is measured in metres per second. The difference between speed and velocity is that velocity is a vector, that is it has direction and well as magnitude. So velocity would be measured in metres per second in a certain direction.
The answer is FALSE- acceleration would be correct
"Per second per second" sounds like a speech problem, but in Physics, velocity (or speed) is distance per second. If the velocity (speed) increases, then the acceleration is in units of distance per second (or velocity) per second.An example might make this more clear--If we jumped off a roof, gravity would make us accelerate. Your velocity at the end of the first second is 10 meters per second. Your velocity at the end of the next second is 20 meters per second, the end of the third would be 30, etc.So each second we fall the velocity increases (accelerates) by ....drum roll....10 meters per second per second. Which is the acceleration due to gravity ON THE EARTH. (actually 9.8 m/s/s or 9.8 m/s2, but close enough).
Your question does not contain enough information to answer. But . . . let's assume that the 5,000 pounds is spread out over a flat surface measuring 50 ft x 100 ft. That equals 5,000 square feet. 5,000/5,000 square feet = 1. So our 5,000 pounds would exert exactly 1 pound per square foot at every point. Let's next say that we spread out the 5,000 pound, but thicker, on a flat surface measuring 25 feet x 50 ft. That equals 1,250 square feet. So our 5,000 pounds is now supported by only 1,250 square feet. We know by looking at it that each square foot will support more of the weight than in the first example. 5,000/1,250 = 4. So our 5,000 pounds in this case would exert exactly 4 pounds per square foot. Carried to an extreme, let's say our 5,000 pounds sits on just one square foot of flat surface. 5,000/1 = 5,000 pounds per square foot. Even crazier, our 5,000 pounds might sit on just a 6 inch x 6 inch flat surface. 6" = 0.25 square feet. So, once again, 5,000/.25 = 20,000 pounds per square foot.
The marble has lower drag so its terminal velocity would be greater. Each has its own terminal velocity.
Square seconds, by itself, doesn't make much sense. On the other hand, please note that acceleration is not the same as speed or velocity, therefore you would expect the units to be different between the two. Speed or velocity is measured in meters / second; since acceleration is the change of rate of a velocity (in symbols: dv/dt), its units are velocity / time. Using SI units, that would be (meters / second) / second, and this is commonly written as meters / second2, which makes sense since the seconds appear twice in the denominator.
You need to know the cross sectional area of the pipe, this would be in square feet or square meters. Then take the volume flow in cubic feet per second, or cubic meters per second, and divide it by the area, this will give the velocity in ft/sec or m/sec V=(21.22*Q)/D2 V = velocity D= diameter of pipe Q= flow
If you mean what is the SI unit for velocity, that would be the meter per second, or m/s
The speed of anything is measured in metres per second. The difference between speed and velocity is that velocity is a vector, that is it has direction and well as magnitude. So velocity would be measured in metres per second in a certain direction.
16 feet/second is the speed. To know the velocity, you would also need to specify the direction in which the object moves.
Initial velocity can be measured in the same units as any other velocity. In SI, that would be meters per second, but often km / hour are used, or (in a minority of countries) feet/second or miles/hour.
the SI unit would be meter/second (m/s)
I presume you mean 1 second after jumping from the plane. Since skydiver's fall, their velocity is generally in a downward direction, so the upward velocity is negative. The formula v = gt, where g is the acceleration due to gravity which is about 32.2 feet per second per second, tells us that after 1 second it would be about -32.2 feet per second.
Please reword this question, since in its present form, it doesn't make sense. Right now, it sounds like a square is flying through the air. Maybe you are asking about velocity squared? If so, velocity means both the speed and direction of something. For velocity squared, it would essentially be just multiplying the speed by itself.
20 meters per second is the speed--velocity would require direction data, as well. Velocity is a vectored quantity.
The acceleration would be zero because the turtle is moving at a constant speed
We're not completely sure what you mean by "per hour per second". Going just by what we see in the question, it's an acceleration, not a velocity. "Six miles per hour north" would be a velocity.