Lab 1 - MOTION IN 1 & 2 DIMENSIONS INSTRUCTIONS This laboratory expects that you have studied the Lab 1 module and completed the module pre-lab test. In this laboratory, you will perform four experiments to explore motion in one and two dimensions. Worksheet: Please submit your completed report online (as a pdf or word document) within 7 days of this laboratory. You have to include scanned copy of the worksheet in your report. Required Formulae: v = vo + at x - x0 = Vot +at2 x - X0 =(v0 + v)t v2 = v2 + 2a(x - x0) Experiment 1 (20 min): Determine your reaction time tr Take a 30 cm ruler and hold this such that your partners hand is poised to grasp, but not touching, the ruler. At a random time set the ruler in free fall. After your partner catches the ruler, measure how far the ruler has fallen. Repeat several times noting each distance in the worksheet. Use your TI-30XB calculator to evaluate the average and the standard deviation (method shown in module). Use the constant acceleration equations of motion to determine the reaction time. Repeat the experiment with roles reversed (you catch and your partner drops). Experiment 2 (35min): Investigate 1D motion using a ball bearing and inclined channel Use the bracket provided to incline the metal channel by the greatest amount. Lean a 1 meter ruler parallel with the channel, ensuring that a ball bearing can travel along the channel without touching the ruler. Use either a stopwatch (provided) or slow motion video capture (using your phone) to measure the position and time of the bearing during its motion along the channel. 9 90 91 92 93 94 98 98 92 96 99 Correct the measured time appropriately (stopwatch different to slow motion). Calculate the square of this corrected time in the table too. Use your data to complete the two graphs and extract the required quantities indicated on your worksheet. Answer the two questions provided. Experiment 3 (20 min): Predict and observe motion of two ball bearings In this experiment you will be observing the motion of two spatially separate ball bearings set in motion using the inclined channel. Before your observation you must predict how the position and velocity of each ball bearing evolve with time and record this prediction on the graphs provided. Now perform the experiment (you may wish to do this a couple of times to see if the behaviour is repeatable). Record what observations validate or discredit your predictions. How do the two graphs relate to each other? Discuss with your lab demonstrator. Experiment 4 (35 min): Record the 2D motion of ball on a ramp In this experiment you will be recording in slow motion video two dimensional motion of a ball bearing released from a horizontal or inclined channel. You are free to choose which motion to investigate. After carefiully observing your recording complete the graph provided. Make sure you show the behaviour of