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Can vectors be added to each other?
Yes, two vectors of similar kind can be added. For example we can add a distance vector with another distance vector. But we cannot add distance vector and velocity vector.
Equation for time as a function of distance and velocity?
Since distance (D) equals velocity (V) xtime (T) (D = V x T), then time equals distance divided by velocity or T = D/V. For example, going 20 miles per hour for 2 hours will move a distance of 40 miles. Looking at it the other way, 40 miles divided by 20 miles per hour will equal 2 hours of travel time. PJ
Can you explain a independent variable?
Independent variables do not depend on any other. Like when you count something with time, the time is independent. If you measure the elevation of a road with distance, the distance is independent.
What does directed number mean in math?
It is usually a vector and is a number which has a direction associated with it. Velocity is an example of a directed number. The velocity of an object is not only its speed (distance/time) but also the direction of travel. Acceleration, force are other common vectors.
How do you find velocity with a known time and distance?
Velocity equal distance divided by time. For example, an object that traveled 5 metes in 10 seconds had a velocity of 5/10 meters per second which is .5 meters per second. Velocity is speed in a direction. Sometimes a navigate or positive number is sufficient as the direction. Other times you will need to be more specific, such as .5 meters per second East or 1.3 meters per second 30 degrees East of North.
