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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Last week‚ my group and I were constructing the roller coaster. I contributed by installing my funnel into the coaster. I did this by making adjusting the track so that it would lead the marble to the border of the tube. I did this because learned that when the marble spins around the edge of the tube‚ it increases the time which was what we wanted. After adjusting‚ I put supports on the funnel that would help the funnel maintain its shape to have the most maximum time possible. I also contributed
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regular time intervals on a diagram; (3) drawing vectors showing displacement‚ velocity‚ and acceleration and their x and y components at different times. (4) using vector equations to represent velocity and acceleration vectors quantitatively. In this activity you will practice representing the motion shown in Figure 1 using vectors and vector equations that represent displacements as well as average velocities and accelerations in the 1/15th of a second time intervals between position measurements
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uniform accleration. Its velocity after 5 sec is 25m/s and after 8 sec‚it is 34 m/s. Find the distance travelled by this object in 12th second. Ans. 44.5 A particle starts with a velocity of 100 cm/s and moves with –2 cm/s2 acceleration. When its velocity be zero and how far will it have gone? Ans. 50s ‚ 25m m/s. After 7 a time interval ∆t‚ the velocity of the body is reduced by half‚ and after the same time interval‚ the velocity is again reduced by half. Determine the velocity (in ms–1 ) vf of the
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Speed‚ velocity and acceleration Title: Linear Motion Main Concepts: force‚ velocity‚ speed‚ and acceleration Instructional Objective(s) UKDs: As a result of this lesson students will: Understand THAT… Forces affect the speed of an object Acceleration relates to speed Velocity and acceleration are not the same thing Know … The definition of speed‚ velocity and acceleration Velocity includes
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Part A At what time (in the arbitrary time units of the graph) is the speed of the table (and hence the speed of the blood in the opposite direction) a maximum? Hint 1. How to read the graph The graph is acceleration versus time. Remember that velocity is the signed area under the acceleration curve. As long as the acceleration is positive‚ the speed is increasing. Once the acceleration becomes negative‚ the speed will begin to decrease back to zero. ANSWER: 3 Correct Problem 2.6 Geology. Earthquakes
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component of the athlete’s velocity‚ vx ‚ is equal to the initial speed multiplied by the cosine of the angle‚ q‚ which is equal to the magnitude of the horizontal displacement‚ ∆x‚ divided by the time interval required for the complete jump. Copyright © by Holt‚ Rinehart and Winston. Allrights reserved. ∆x vx = vi cos q = ∆t At the midpoint of the jump‚ the vertical component of the athlete’s velocity‚ vy ‚ which is the upward vertical component of the initial velocity‚ vi sin q‚ minus the downward
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______________________________________ Date: ________________________ Student Exploration: Uniform Circular Motion Vocabulary: acceleration‚ centripetal acceleration‚ centripetal force‚ Newton’s first law‚ Newton’s second law‚ uniform circular motion‚ vector‚ velocity Prior Knowledge Questions (Do these BEFORE using the Gizmo.) 1. A boy is whirling a yo-yo above his head in a counter-clockwise direction. At the exact moment shown at left‚ he lets go of the string. In which direction will the yo-yo travel
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| 0 | 0.2 | 0.4 | 0.6 | 0.8 | 1.0 | Distance (m) | 0 | x | | | | | Average Velocity m/s | 0 | A | B | | | | Acceleration m/s/s | 0 | | C | | | | Example to calculate average velocity A A= x - 0 (change in distance) 0.2 - 0 (change in time) Repeat for all other velocities Example to calculate acceleration C C = Velocity B - Velocity A (change in velocity) 0.4 - 0.2 (change in time) Repeat for other
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Objectives: To learn about motion through studying and matching graphs of position vs. time and velocity vs. time; to develop an understanding of the concepts of kinematics. Predict‚ sketch‚ and test motion graphs to better understand motion. Equipment: Computer Vernier computer interface Logger Pro Vernier Motion Detector Meter stick Masking tape Preliminary Questions: 1a. The pink line shows the position of an object at rest with respect to
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