Velocity.
Velocity refers to "the rate at which an object changes its position." Since velocity is defined as the rate at which the position changes, this motion results in zero velocity. If a person in motion wishes to maximize their velocity, then that person must make every effort to maximize the amount that they are displaced from their original position. Every step must go into moving that person further from where he or she started. For certain, the person should never change directions and begin to return to the starting position. Velocity can be described as a given unit of measurement over time. (meters/second).
I will be demonstrating
Velocity 1 - I know the difference between position, distance, and displacement.
Velocity 2 - I know the difference between speed and velocity
Velocity 3 - Draw motion diagrams moving with constant velocity
Velocity 4 - I can solve problems involving average speed and velocity
Velocity 5- I can draw the position vs time graph for an object moving with constant velocity
Velocity 6 - I can draw velocity vs time graph for an object moving with constant velocity
I will be demonstrating
Velocity 1 - I know the difference between position, distance, and displacement.
Velocity 2 - I know the difference between speed and velocity
Velocity 3 - Draw motion diagrams moving with constant velocity
Velocity 4 - I can solve problems involving average speed and velocity
Velocity 5- I can draw the position vs time graph for an object moving with constant velocity
Velocity 6 - I can draw velocity vs time graph for an object moving with constant velocity
QuestionsA. What is the average speed?
B. The average velocity? C.What are the instanious velocities at t=1,2.5,4.5,6.0s? D. What is the average velocity for the interval between 4.5 - 9.0 seconds. |
AnswersA. To find average speed of the motion is to use the equation
Speed = (distance traveled/total time to travel that difference). So the formula would show up as (20ms/11s) and therefore your answer would be 1.8m/s for the speed because it ignores direction unlike velocity. B. For average velocity use the equation: Average velocity = (displacement/Total travel time) or (x2 - x1/ t2 - t1). In this case 11 seconds is the end and 0 seconds is the beginning. The beginning position is 1 and the ending position is 2. So it all truns out to be (2-1/11-0) which equals to .09m/s. C. Looking at the graph, at one second it would be at position B so it would be 1m/s. At 2.5s, it's 6m/s. At 4.5 it's 9m/s. And at 6 seconds it's 7m/s. D. To solve for this you take the displacement between the two velocity and displacement of the time. The equation is (x2-x1/t2-t1) translated to (2ms-9ms/9-4.5) -2m/s for the average velocity |
Problem # 2
Questions & AnswersA. Draw a velocity vs time graph.
Shown in the position graph that it is constant and moving at a straight slope. It is increasing its position 10 meters every second. B. Draw a motion graph. Since position and velocity is constant. All the dots shown on the motion graph are all the same distance. |