Experiment 1: Newton's First Law of MotionIn this experiment, you perform a series of motions and analyze the results to explain Newton’s First Law of Motion.Materials(1) 3" by 5" Notecard(1) 8 oz. Styrofoam® Cup1 Washer*Deep Container (Bowl or Pitcher) *Water*You Must ProvideProcedurePart 11. Fill the container with about four inches of water. 2. Find an open space outside to walk around in with the container of water in your hands. 3. Perform the following activities and record your observations of each motion in Table 1: a. Start with the water at rest (e.g., on top of a table). Grab the container and quickly accelerate it. b. Walk with constant speed in a straight line for 15 feet. c. After walking a straight line at constant speed, make an abrupt right-hand turn. Repeat with a left-hand turn. d. After walking a straight line at constant speed, stop abruptly. Part 21. Place a 3 x 5 notecard on top of a Styrofoam® cup. 2. Place a washer on the middle of the 3 x 5 notecard. © 2014 eScience Labs, LLC.All Rights Reserved3. Hole the Styrofoam® cup with your non-dominant hand and flick the notecard with your dominant hands (the hand you write with) so it moves off of the Styrofoam® cup. Record your observations in Table 2. 4. Repeat Steps 1- 3 four times for a total of five trials. Table 1: Motion of Water ObservationsMotion ObservationsaThe water went back toward me then went forwardbThe water rocked back and forth but not hardcWhen turning right: water took diagonal path to the left then went back to the right.When turning left: water took diagonal path to the right then came back to left sidedWater went forward almost out of the container and slushed around Table 2: Observations After Flicking Notecard Off of CupTrial Observations1 The notecard flew off but the washed dropped in the cup2 Notecard flew off, washer went into cup3 Washer dropped in the cup and notecard went flying4 Same thing happened as before5 Washer dropped in cup, notecard flew off cupPost-Lab Questions1. Explain how your observations of the water and washer demonstrate Newton’s law ofinertia.2. Draw a free body diagram of your containers of water from the situation in Part 1 Step 4d. Draw arrows for the force of gravity, the normal force (your hand pushing up on the container), and the stopping force (your hand accelerating the container as you stop.) What is the direction of the water’s acceleration?© 2014 eScience Labs, LLC.All Rights Reserved3. Can you think of any instances when you are driving or riding a car that are similar to this experiment? Describe two instances where you feel forces in a car in terms of inertia.© 2014 eScience Labs, LLC.All Rights
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