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Velocity

Hpc3 notea

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Chapter 3Chapter 3Falling Objects andFalling Objects andProjectile MotionProjectile Motion Gravity influences motionin a particular way. How does a droppedobject behave??Does the objectaccelerate, or is thespeed constant??Do two objectsbehave differently ifthey have:?different masses??different shapes?

Curve Ball Lab - MATH 273

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Math 273 ? Lab 1 ? F 07 Curve Balls and Vectors Does a baseball pitch really curve or is it some sort of optical illusion? Assume the pitcher's mound is at the point (60, 0, 0) and that home plate is at the origin of our coordinate system. Suppose the pitcher throws the ball toward home plate and gives it a spin of s revolutions per second about a vertical axis through the center of the ball. This spin is described by the spin vector s where s points along the axis of revolution with length s. From aerodynamics we learn that this spin causes a difference in air pressure on the sides of the ball and results in a spin acceleration on the ball given by , where c is some empirical constant and is the velocity vector. The total acceleration of the ball is then ,

Simple Harmonic Motion Answers (2)

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4.1 Simple harmonic motion 1a. [4 marks] This question is about simple harmonic motion (SHM). The graph shows the variation with time of the acceleration of an object X undergoing simple harmonic motion (SHM). Determine the maximum displacement of X. Give your answer to an appropriate number of significant figures. Markscheme use of ; or or ; } (allow answers in the range of T = 7.8 to 8.0 (s) or = 0.785 to 0.805 (rad s)) ; (allow answers in the range of 4.0 to 4.25 (m)) two significant figures in final answer whatever the value; Award [4] for a bald correct answer. Examiners report Similarly, this was well done. Most appreciated the need to truncate the final answer to a sensible number of significant digits (two in this case). 1b. [2 marks]

Simple Harmonic Motion Answers

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4.1 Simple harmonic motion 1a. [4 marks] This question is about simple harmonic motion (SHM). The graph shows the variation with time of the acceleration of an object X undergoing simple harmonic motion (SHM). Determine the maximum displacement of X. Give your answer to an appropriate number of significant figures. Markscheme use of ; or or ; } (allow answers in the range of T = 7.8 to 8.0 (s) or = 0.785 to 0.805 (rad s)) ; (allow answers in the range of 4.0 to 4.25 (m)) two significant figures in final answer whatever the value; Award [4] for a bald correct answer. Examiners report Similarly, this was well done. Most appreciated the need to truncate the final answer to a sensible number of significant digits (two in this case). 1b. [2 marks]

Kinematics Test Review

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Name:__________________________________________ Date: _________________________ Pd: __________ Honors Physics Mr. Roberts 2D Kinematics Test Review Conceptual Questions A bullet fired from a rifle begins to fall As soon as it leaves the barrel After air resistance reduces its speed Not at all if air resistance is ignored One ball is dropped vertically from a window. At the same instant, a second ball is thrown horizontally from the same window. Which ball has the greater speed at ground level? The dropped ball The thrown ball Neither ? they both have the same speed on impact It depends on how hard the ball is thrown

kinematics

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Name:__________________________________________ Date: _________________________ Pd: __________ Honors Physics Mr. Roberts 2D Kinematics Test Review Conceptual Questions A bullet fired from a rifle begins to fall As soon as it leaves the barrel After air resistance reduces its speed Not at all if air resistance is ignored One ball is dropped vertically from a window. At the same instant, a second ball is thrown horizontally from the same window. Which ball has the greater speed at ground level? The dropped ball The thrown ball Neither ? they both have the same speed on impact It depends on how hard the ball is thrown

IB Physics SL test 2014 1-2

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2214-6516 16 pages M14/4/PHYSI/SPM/ENG/TZ2/XX Wednesday 7 May 2014 (morning) Physics standard level PaPer 1 INSTRUCTIONS TO CANDIDATES ? Do not open this examination paper until instructed to do so. ? Answer all the questions. ? For each question, choose the answer you consider to be the best and indicate your choice on the answer sheet provided. ? A clean copy of the Physics Data Booklet is required for this paper. ? The maximum mark for this examination paper is [30 marks]. 45 minutes ? International Baccalaureate Organization 2014 22146516 2214-6516 ? 2 ? M14/4/PHYSI/SPM/ENG/TZ2/XX 1. Which of the following is a unit of energy? A. kg m?1 s?1 B. kg m2 s?2 C. kg m s?2 D. kg m2 s?1

Physics

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Uniform accelerated motion vocab

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Velocity
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uniform accelerated motion; velocity; speed; slope; acceleration; displacement; distance

Speed: The time rate of motion Slope = change in distance/change in time (rise/run) Scalar: the distance moved per unit of time Average speed (scalar): the ratio of the total distance traveled to the total time Total distance/elapsed time (m/s) Instantaneous speed (scalar): the speed of an object at a particular moment in time The slope of the line that is tangent to the curve at a given point Velocity (vector): speed in a particular direction Average velocity (vector): the total displacement divided by the total elapsed time Displacement /Elapsed time = (?x)/ (?t) Instantaneous velocity: The speed and direction an object moves at a particular moment in time
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