Go to http://phet.colorado.edu/simulations/sims.php?sim=Motion_in_2D and click on Run Now. 1) Once the simulation opens‚ click on ‘Show Both’ for Velocity and Acceleration at the top of the page. Now click and drag the red ball around the screen. Make 3 observations about the blue and green arrows (also called vectors) as you drag the ball around. The vectors appear to have both direct and inverse relationships with each other. When I move the ball one direction‚ both of the vectors move the
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Midterm Review Name: ______________________________ Date: ___________ Circle Period R1 R2 R3 S1 S2 S3 Chapter 1 – About Science Vocabulary: Define each term. Fact: Hypothesis: Law: Theory: Check Concepts: 1. Why is physics the most basic science? 2. Why is mathematics important to science? 3. Is a scientific fact something that is absolute and unchanging? Defend your answer. Chapter 2 – Mechanical Equilibrium Vocabulary: Define each term. Force: Net Force: Vector:
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Graham’s number‚ named after Ronald Graham‚ is a large number that is an upper bound on the solution to a certain problem in Ramsey theory. The number gained a degree of popular attention when Martin Gardner described it in the "Mathematical Games" section of Scientific American in November 1977‚ writing that‚ "In an unpublished proof‚ Graham has recently established ... a bound so vast that it holds the record for the largest number ever used in a serious mathematical proof." The 1980 Guinness
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of a pendulum) THINGS TO REMEMBER... For measuring short intervals of time (when each period is the same)‚ multiple measurements can be taken and then averaged e.g. Period of a pendulum = Time for 10 oscillations / 10 1.2 Speed‚ velocity and acceleration Core • Define speed and calculate speed from total distance / total time Symbol Definition SI unit Vector / Scalar Speed v or u Speed = total distance / total time m/s Scalar • Plot and interpret a speed/time graph or a distance/time graph
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Unit 1 HW 16.2: Acceleration 2 Name: Date: Period: UNIT I Acceleration 2 The problem v vs t graph Solution 1. A poorly tuned Yugo can accelerate from rest to a speed of 28 m/s in 20 s. a) What is the average acceleration of the car? b) What distance does it travel in this time? a = (28-0m/s)/20s = 1.4 m/s/s x = 1/2at2 = ½(1.4)(20)2= 280m 2. At t = 0 a car has a speed of 30 m/s. After 6 s‚ its speed is 15 m/s. What is its average acceleration during this time interval
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Constant Acceleration‚ Velocity and Displacement On A Downward Ramp 3/3/2014 Purpose: To determine the velocity and acceleration of an object at different positions going down a ramp at four different angles. Hypothesis: If an object is accelerating at different angles then the larger angles will always have the largest acceleration. Materials: Ramp Miniature car Ticker Machine Masking tape Ticker tape Carbon paper Power supply Ruler Procedure: 1. A ramp
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“I used to be a pathological liar. … I used to express my feelings nonverbally‚ and I used to scare people that I loved‚ Graham confesses. He’s since become so tender a listener that women are drawn to him like kittens to cream‚ and his video library is chock full of confessional peep shows (Kempley 1). Cynthia‚ a punky bartender‚ is a nut-and – bolts hedonist who
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object is moving with 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
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CBSE TEST PAPER-02 CLASS - IX Science (Motion) 1. If a body starts from rest‚ what can be said about the acceleration of body? (a) Positively accelerated (c) Uniform accelerated (b) Negative accelerated (d) None of the above [1] 2. What does slope of position time graph give? (a) speed (b) acceleration (c) uniform speed [1] (d) Both (a) and (c) depending upon the type of graph. 3. When a body moves uniformly along the circle‚ then:(a) its velocity changes but speed remains the same (b) its
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Experiment 9: Maxwell’s Wheel Introduction: The second lab performed on 2/1/12 involved two investigations concerning Maxwell’s wheel. Maxwell’s wheel is an apparatus that consists of a large disk with a long axle. The disk then bound to a support hanging from above with strings attached to each end of the axle. Maxwell’s wheel is considered to be an important apparatus to investigate physical phenomenon’s because it its ability to combine straight line motion and rotation of a rigid body
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