Summer Assignment Revision –Term 1 Grade:9 Answer as many as possible: 1) State universal law of gravitation. Express it mathematically. 2) Differentiate between G‘ and g‘ in tabular form. 3) (a) What is acceleration ? Write its unit. (b) Draw velocity-time graph‚ when an object has (i) uniformly accelerated velocity. (ii) uniformly retarded velocity. 4) Prove that if a body is thrown vertically upward‚ the time of ascent is equal to the time of descent. 5) The earth attracts the moon. Does the moon
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Name _ ___________________ Motion in 2D Simulation 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. 1. The green vector moves in the direction of the mouse until the red ball catches up to
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ball’s acceleration. (b) How far does the ball moves before coming to a stop? 4. A particle moves in a straight line with varying velocity as shown by the velocity time graph in Figure 1. (The graph is not drawn to
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(Motion) 1. What does the slope of velocity – time graph give? (a) Distance (c) Acceleration (b) displacement (d) Change in velocity. [1] 2. The displacement of the body can be(a) Positive (c) Zero (b) negative (d) All of these. [1] 3. Which of the following gives both direction and magnitude(a) scalar (c) Both (b) vector (d) None. [1] 4. If a moving body comes to rest‚ then its acceleration is(a) Positive (c) Zero (b) negative (d) All of these depending upon initial velocity
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a graph versus t (plot t on the abscissa‚ i.e.‚ x-axis). Results 1: Task 3. Plot a graph versus t2 (plot t2 on the abscissa‚ i.e.‚ x-axis). The equation of motion for an object in free fall starting from rest is y = ½ gt2‚ where g is the acceleration due to gravity. This is the equation of a parabola‚ which has the general form y = ax2. Results 1: Task 4. Determine the slope of the line and compute an experimental value of g from the slope value. Remember‚ the slope of this graph represents
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the height of the track to the cart’s acceleration? The data shows that sinӨ‚ which is dependent on the height‚ is getting higher as acceleration is increasing. This implicates that when object is at higher altitude‚ its acceleration is faster. 2. From the data obtained‚ how is time‚ t related to the inclination of the track? Explain why? Time and position of velocity are interrelated to each other and the height and gravitational pull affects the acceleration of a moving and a free falling object
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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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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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| |Average Speed |Vavg |Vavg = (total distance | | | |traveled)/(total elapsed time) | |Acceleration |a |a = DV/Dt = (V2 - V1) / (t2 - t1) | |Final Speed |V2 |V2 = V1 + aDt | | Original Speed
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velocity and acceleration of four moving objects at a given instant in time are given in the following table. Determine the final speed of each of the objects‚ assuming that the time elapsed since t = 0 s is 2.0 s. Initial velocity v0 Acceleration a (a) +12 m/s +3.0 m/s2 (b) +12 m/s -3.0 m/s2 (c) -12 m/s +3.0 m/s2 (d) -12 m/s -3.0 m/s2 29. A jogger accelerates from rest to 3.0 m/s in 2.0 s. A car accelerates from 38.0 to 41.0 m/s also in 2.0 s. (a) Find the acceleration (magnitude
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