and every one of us follow. Newton’s first law is law of inertia‚ which is a restatement of Galileo’s idea‚ an object in rest stays in rest or an object in motion stays in motion unless acted upon by an outside force. Newton’s second law states acceleration is proportional to the magnitude of the net force‚ is in the same direction‚ and is inversely proportional to the mass of the object. Newton’s third law‚ action and reaction‚ states for every action there is an equal and opposite reaction. The
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Take upward and rightward as positive. 1. Sketch a graph to show how the horizontal velocity (vx) varies with time (t). vx t 2. Sketch a graph to show how the vertical velocity (vy) varies with time (t). vy t 2 3. State an expression for the acceleration of the object along the slope. ……………………………………………………………………………………………… Scenario 2 A ball is projected at an angle and allowed to bounce on the floor 2 - 3 times. + + ball floor Based on what you
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seconds‚ the velocity of Billy increases linearly from 0 to about 14 m/s.” One dimensional motion‚ such as a car trip‚ can be described using several different graphs. A velocity vs. time graph can be used to describe both acceleration and displacement. Acceleration is shown by the slope of the graph‚ displacement by the area. Billy and Crystal both took a short car trip along a road heading straight west from their house. They recorded their velocity every second. After they got home‚
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thus the velocity gives a better indication of the motion. The average velocity of an object can be determined from the equation below: ------------------------------------------------- ------------------------------------------------- Acceleration For
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Lecture 10‚ Oct. 08‚ 2013 Announcement Mid-term: Date: 22 Oct 2013 (Tue) Time: 9:30 - 11:15 am Venue: PHYS1110A: Science Center L1 Content: things learned before today’s class Format: 5 long questions Announcement Exercise/tutorial session at MMW 715 (TA: ZHAO Saisai) will be merged with the session at SC L1 HW 4 is launched today and due next Thursday (Oct. 17‚ 2013) Reminder: HW 3 is due this Thursday Review 1. The Law of Conservation of Linear Momentum: Pi = Pf Pxi
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mass accelerates quicker and therefore an object with more mass accelerates at a slower speed. This concept is supported by Newton’s second law of motion‚ with the idea of "force = mass x acceleration". Hence‚ if the same amount of force is applied to two objects‚ the object with less mass will have more acceleration. In relation to rockets‚ a rocket with more mass will speed up slowly along with gravitational force acting upon it in the opposite direction. Therefore‚ more mass will result in more gravitational
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Activity Lab #4 : Non-Uniform motion Design Aspect 1 * Problem: What is the acceleration of the puck in the air table? Aspect 3 Material List: * Strip of Paper * Puck * Foot pedal * Air table * Procedure: 1) Place a long sheet of white unlined paper‚ and place it on the air table. 2) Turn on the air table machine. 3) Place the puck top of the air table over the long sheet of white unlined paper 4) Using your foot‚ press down on the foot pedal. 5) Release the
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Newton’s 2nd law of motion: Force produces acceleration in an object in its own direction. The acceleration is directly proportional to the force and inversely proportional of the mass of the object. Resultant force is unbalanced force. F=ma ‚ where F is the resultant force. Q: the mass of a boy n his bicycle is 30kg‚ wants to accelerate at 1.5per sec square if the opposing force is acting on both is 40N Find the force needed for this acceleration. Q2: a car of weight 50‚000N is moving
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Angular Kinematics An object on a point that rotate a fixed axis has circular motion around the same axis. Linear quantities cannot be used for circular motion. This is due to the extended objects rotational motion rather that a particles linear motion. Circular motion‚ for this reason‚ is described in terms of the change in angular position. Except for the points on the axis‚ all the points on a rotating rigid object during any time interval move through the same angle. Many equations describing
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MOMENT OF INERTIA Chua‚ Richard Janssen J.‚ PHY11L/A3 chardsenchua77@yahoo.com Abstract The moment of inertia‚ or also known as the rotational inertia‚ is the rotational analog of a rigid body to a linear or an angular motion. It is one of the fundamentals of the dynamics of rotational motion. The moment of inertia must always be in a specified chosen axis of rotation. The point of motion is basically defined as the relationship between mass and the perpendicular distance to the rotational
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