Velocity The word‚ velocity‚ originates from the Latin word‚ vēlōcitās‚ meaning swiftness or speed. Velocity is one of the basic words used in mathematics and physics and forms the basis for the more important formulae used in high level study of these subjects. According to the dictionary‚ the definition of velocity is the rate of change of position of an object. In simple words‚ velocity means the distance travelled by an object over some time divided by the time taken by the object to travel
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motion (1-D) with constant (uniform) velocity with constant (uniform) acceleration‚ e.g. free fall motion Projectile motion (2-D) x-component (horizontal) y-component (vertical) 2 Learning Outcome: 2.1 Linear Motion (2 hour) www.kmph.matrik.edu.my At the end of this chapter‚ students should be able to: Define and distinguish between i) distance and displacement‚ ii) speed and velocity‚ iii) instantaneous velocity‚ average velocity‚ uniform velocity iv) instantaneous acceleration‚ average
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between the moment the car left the table and the moment it hit the floor? b. What was the horizontal velocity of the car when it hit the ground? 3. A hawk in level flight above the ground drops the fish it caught. If the hawk’s horizontal speed is ‚ how far ahead of the drop point will the fish land? 4. A pistol is fired horizontally toward a target away‚ but at the same height. The bullet’s velocity is . How long does it take the bullet to get to the target? How far below the target does the bullet
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Laboratory – Terminal Velocity Introduction: Consider dropping a piece paper and a brick from the same height. Although in theory they should both strike the ground at the same time; in practice the brick will always strike the ground first. The reason is because of air resistance. As the paper falls to the ground air resistance is pushing the paper up‚ this slows the acceleration of the paper. It is known that as the velocity of an object increases the air resistance acting on the object
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contains only vector quantities? A. mass‚ time B. force‚ velocity C. time‚ momentum D. acceleration‚ speed 2. An airplane heads due north with an airspeed of 75 m/s. The wind is blowing due west at 18 m/s. What is the airplane’s speed relative to the ground? A. 57 m/s B. 73 m/s C. 77 m/s D. 93 m/s 3. Two velocity vectors‚ v1 and v2 are shown. Which of the following best represents the resultant of the addition of the two velocity vectors? 4. A car travelling north at 20 m/s is later
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as plotting of the data on the graph. The velocity versus time graph came out to be a quadratic model‚ having a number of curves. Since this is based off of original measurements‚ any mistakes in measuring would have been multiplied when the velocity was calculated‚ so human error could be prevalent here as well. Conclusion Our hypothesis was only partially supported. The position versus time graph was a linear model‚ as predicted‚ but the velocity versus time graph was quadratic‚ not supporting
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initial height. A motion detector is mounted on the ceiling directly above the ball‚ facing down. So‚ the positive direction -- the away-from-the-detector direction -- is downward. Draw the position‚ velocity‚ and acceleration graphs. Since moving downward is a positive direction‚ is the velocity positive when the ball falls‚ 0 when it hits the ground‚ and then negative when it moves up? Is the accerlation positive (9.8) as the ball falls‚ very positive when it hits the ground‚ and then neg (almost
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Q1. Figure 1 shows a solid cylindrical steel rod of length = 2.0 m and diameter D = 2.0 cm. What will be increase in its length when m = 80 kg block is attached to its bottom end? (Young’s modulus of steel = 1.9 × 1011 Pa) Fig# Answer: ∆L = FL mg = AY AY = = 0.0000262689 m A) B) C) D) E) 2.6 x 10-5 m 1.3 x 10-5 m 4.8 x 10-5 m 7.2 x 10-5 m 3.5 x 10-5 m Phys101 Term: 111 Final Tuesday‚ January 10‚ 2012 Code: 1 Page: 1 Q2. In Fig. 2‚ PQ is a horizontal uniform beam weighing
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Dependent Variable: Velocity of wave (wave velocity) Constants: Plastic storage container Piece of wood Height from which the wood is dropped and the way it is held before each time it is dropped Gravel-like substance that creates an uneven bottom—this includes both its physical material and the amount of it that is placed on the bottom of the tank during each treatment Time at which the stopwatch is started after the wooden block is dropped and a wave is created Problem: It is a known
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Abstract— The calculation of dispersion curves and‚ therefore‚ the rheological properties is possible by analyzing how the different phase velocity modes behave in the medium of interest. Shear wave propagation in “thin” organs is affected by the mechanical properties of the tissues surrounding those organs. In order to obtain the proper mechanical properties of such boundary sensitive organs‚ an analytical solution for the dispersion curves on a plate surrounded by semi-infinite solids was derived
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