LAB 1: INTRODUCTION TO MOTION

More documents

Recommendations

Info

Lab 1: Uniform Motion Vector Representation of Velocity: Velocity implies both speed and direction. How fast you move is your speed. The rate of change of position with respect to time is velocity which may or may not have the same numerical value as speed. As you have seen, for motion along a line (e.g., the x axis) the sign (+ or -) of the velocity indicates the direction. If you move in the positive x direction your displacement and therefore your velocity is positive. The faster you move in the positive x direction, the larger positive number. If you move in the negative x direction your displacement and therefore your velocity is negative. The faster you move in the negative x direction, the "larger" the negative number. These two ideas of direction and speed can be combined and represented by vectors. An arrow pointing in the direction of motion represents a velocity vector. A single “tick” is used to distinguish it from the displacement vector. The velocity vector is usually drawn above the object, and the length of the arrows are drawn in proportional to the velocity at that instant, so the greater the velocity the longer the arrow. This can be illustrated for the case of the Wolf and the Prof. The wolf moves three times farther than the Prof. in the same time, so has it three times the velocity. x x -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 Draw the velocity vectors for the lady and her rapidly disappearing dog. You have already calculated the displacement in the same time interval, so you know the relative speeds of the dog and the lady. The length of the vectors should be approximately in the same ratio as those speeds. x x -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 Page 1- 12
Lab 1: Uniform Motion Conclusion: (Approximately 1 page in length. Use Separate sheet of paper.) Questions: 1. In the space provided, describe how you would move to create the following position-time graphs. To distinguish between different shapes and slopes, you must use the terms moving steadily when the speed is constant and faster or slower where there are different the speeds in a single graph. Also use towards or away from the detector. Don’t use backwards or forwards since moving backwards or forwards while moving away from the detector produces the same graph. 2. Standing on a bridge above an expressway, you noticed that at 4:30pm a truck is +350m from the bridge (the origin in your chosen reference frame). At 4:31pm, it is - 250m on the opposite side of the bridge. Calculate the velocity of the truck. Page 1- 13
Page 1 and 2: Position Name: Date: ___________Par
Page 3 and 4: Position (m) Position (m) Position
Page 5 and 6: Lab 1: Uniform Motion INVESTIGATION
Page 7 and 8: Velocity (m/s) Lab 1: Uniform Motio
Page 9 and 10: Lab 1: Uniform Motion Compare your
Page 11: Lab 1: Uniform Motion Results from

LAB 1: INTRODUCTION TO MOTION

Create successful ePaper yourself

Delete template?

Save as template?