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What is initial velocity measured in?
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.
How do units for speed and velocity compare?
The units are the same (metres per second) except that the velocity also has the direction of motion associated with it.
If a rock is dropped from a 144ft building what is its velocity after one second?
After one second the rock will be traveling at 9.8m/s (meters per second) or 32.17 feet per second. The height of the building is irrevelant, because gravity always pulls with the same force of 9.8m/s2 (meters per second squared), which means that every second the velocity will increase by 9.8m/s. This is why after one second the rock will be going 9.8m/s.
How much is 19.44 linear feet in feet?
Linear feet and feet means the same thing.
What is the result if you subtract a velocity vector to another velocity vector?
The result will also be a velocity vector. Draw the first vector. From its tip draw the negative of the second vector ( ie a vector with the same magnitude but opposite direction). The the resultant would be the vector with the same starting point as the first vector and the same endpoint as the second. If the two vectors are equal but opposite, you end up with the null velocity vector.
