1 Velocity‚ Speed‚ Acceleration‚ and Deceleration The goal for today is to better understand what we mean by terms such as velocity‚ speed‚ acceleration‚ and deceleration. Let’s start with an example‚ namely the motion of a ball thrown upward and then acted upon by gravity. A major source of confusion in problems of this sort has to do with blurring the distinction between speed and velocity. The speed s is‚ by definition‚ the magnitude of the velocity vector: s := |v|. Note the contrast: –
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the acceleration of a cart that rolling down from a frictionless track (our assumption) by calculating theoretically and measuring experimentally. Compare the experimental and expected values of acceleration. Show that the acceleration of a cart moving down a slope (from frictionless track) is dependent on the angle of the slope. Introduction If you have been on a roller coaster‚ you experienced a large‚ downhill acceleration after reaching the top of the first hill. Compare this acceleration to
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trolley and the weights (ca. 2m) -‐1 set of weights that will accelerate the trolley (up to 5N) -‐1 a.m. to measure the acceleration Smart ^ (including all pieces) D.1 Aim of Experiment: ^Trolley The aim of this experiment is to test Sir Isaac Newton’s second
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Chapter 4 – Linear Motion Reading Assignment Section 4.1 –Motion Is Relative 1. How can you describe motion? 2. Describe motion in terms of space shuttle? What is it relative to? A race car? 3. How can you be both at rest and also moving about 107‚000 km/h at the same time? 4. When you describe the speed of anything what are you actually describing? 5. How can you tell that an object is moving? 6. You cover 10 meters in 1 second. Is your speed the same if you cover 20 meters in 2 seconds? Section
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answers on a separate sheet of paper‚ not squished in the spaces on these pages. When relevant‚ data collected should be presented in a table. Objective: To explore the acceleration and force of an object that travels a circular path at constant speed. Motion of this kind is called uniform circular motion. Part 1: Centripetal Acceleration 1. The Gizmotm shows both a top view and a side view of a puck constrained by a string‚ traveling a circular path on an air table. Be sure the Gizmo has these settings:
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a = = (Acceleration) b. a = Δv = vf – vi = – = Δt = tf – ti = 0.525s – 0.4s = 0.125s a = = (Deceleration) c. a = Δv = vf – vi = – = Δt = tf – ti = 1.1s – 0.55s = 0.55s a = = (No acceleration) b) Questions a => g a. Our line of best fit (in each section‚ in this case section a) is a straight line. This indicates that there was constant positive acceleration b. a = Δv = vf – vi = – 0 = Δt = tf –
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motion are time‚ position‚ displacement‚ velocity and acceleration. Newton has described objects in motion in balanced and unbalanced state. There is equilibrium to the object with balanced forces that are acting on it. He said that the object will never accelerate if there will be no net force acting on it. Thus‚ the velocity is constant and its acceleration is always zero. In the Second Law of Motion‚ he showed that an object will have acceleration due to unbalanced forces acting on it. There are two
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Tasneen Ahsan Date: 19th November‚ 2012 Purpose To show how the acceleration of an object changes when‚ the mass changes and the net force is kept constant and when the mass is the same.. Hypothesis I predict that by changing the mass of the object will result in a change in the acceleration as Newton`s second law states that the magnitude of the acceleration of any object is directly proportional to the magnitude of the net force‚ and inversely proportional
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force and motion I problem 1 The figure below is an overhead view of a 12 kg tire that is to be pulled by three ropes. One force (Fl‚ with magnitude 50 N) is indicated. Orient the other two forces F2 and F3 so that the magnitude of the resulting acceleration of the tire is least‚ and find that magnitude if (a) F2 = 30N‚ F3= 20 N; (b) F2= 30 N‚ F3 = 10 N; and (c) F2 = F3 = 30 N. problem 2 A weight-conscious penguin with a mass of 15.0 kg rests on a bathroom scale (see figure below). What are (a)
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