Uniform Circular Motion Uniform Circulated Motion is defined as a movement of an object along the circumference of a circle or rotation along a circular path. It can be uniform‚ with constant angular rate of rotation (and constant speed)‚ or non-uniform with a changing rate of rotation. The rotation around a fixed axis of a three-dimensional body involves circular motion of its parts. The equations of motion describe the movement of the center of mass of a body. Physics‚ particularly Uniform
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× 10 –27 kg R = 8.31 J K –1 mol –1 NA = 6.02 × 10 23 mol –1 k = 1.38 × 10 –23 J K –1 G = 6.67 × 10 –11 N m 2 kg –2 g = 9.81 m s –2 © UCLES 2006 9702/02/O/N/06 3 Formulae uniformly accelerated motion‚ s = ut + at 2 v 2 = u 2 + 2as W =p V work done on/by a gas‚ gravitational potential‚ simple harmonic motion‚ velocity of particle in s.h.m.‚ φ = – Gm r a =–
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will pass over a pulley at the table’s edge so that as the mass falls the cart will be accelerated over the table’s force. The cart will be released from rest and allowed to accelerate over a distance. Using a stopwatch‚ we determine how long it takes‚ for the cart to move through the distance. The results that our group gathered seem not accurate because of human error. Introduction: Newton ’s second law of motion pertains to the behavior of objects for which all existing forces are not balanced.
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distance of 90.0 miles in 60.0 minutes. Which one of the following statements concerning this situation is necessarily true? (a) The velocity of the car is constant. (b) The average velocity of the car is 90.0 miles per hour in the direction of motion (c) The first 45 miles must have been covered in 30.0 minutes. (d) The speed of the car must be 90.0 miles per hour throughout the entire trip. Ans. (b) 5. At time t = 0 s‚
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Jetée. In the beginning of the film‚ the narrator is speaking of a man dying‚ and while the narrator is speaking images flash across screen at a faster rate to create tension‚ and this is known as accelerated editing. Accelerated editing is used quite frequently in the movie. Another scene with accelerated editing shows images of scientists giving a man a shot. As the scene progresses and the needle gets closer to his arm the photographs on the screen
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How does technology influence visual art? And how does photography influence the development of painting? This essay considers the impact of technology on the visual art and how this technology accelerated the development of the art and how people respond‚ adapt and incorporate modern technology into their own work. The impact of technology in visual arts has been in photography. Willian Melin stated that‚ “the dominant forces during the past century has been modern technology and has affected
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non-uniform speed. 4. The brakes applied to a car produced an acceleration of 6 ms-2 in the opposite direction of the motion. If the car takes 2s to stop after the application of brakes‚ calculate the distance it travels during this time. 5. What is positive acceleration and negative acceleration? 6. Why is the motion of Satellites around their planets considered an accelerated motion? 7. Study the time (t) versus distance (s) data given below and answer the questions that follow:
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FRICTION Friction is necessary for walking due to the following reason‚ As per Newton’s third law of motion‚ (every action has an equal and opposite reaction) we can walk if and only if the ground we are walking on push our feet back with a force. Now‚ as per the third law the ground would definitely push our feet back but if we are walking on a perfectly smooth ground which has no friction our force would simply cancel out the force reverted by the ground and we would fall. If there was no
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of the body as possible. Second; the body parts should move in sequence with the bigger muscles leading the action‚ while the smaller muscles closest to the object should move last. The third principle states that the muscles need to be used and accelerated with the
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energy increases uniformly with time t‚the net force acting on it is proportional to what power of time? 7. A ball of mass 50g is thrown upwards. It rises to a maximum height of 100m. At what height its kinetic energy will be reduced to 70%? 8. An automobile moves along a straight horizontal road with a speed (i)v and (ii)3v. Assuming identical conditions‚find the ratio of the shortest distances in which the automobile can be stopped. 9. A body of mass m accelerates uniformly from rest to a speed
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