trains. The passenger train should move quickly with high speeds. The rail road will not be always straight it should pass through curves and turns. We all know that if you are driving in your car and you take a turning at speed you feel centrifugal forces. Well it is no different from
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Momentum Running: When running the bases in softball‚ there is a lot more to it then the average person would think. While we run the bases‚ we are changing our momentum by applying more force‚ the force of friction‚ onto the ground which causes more force exerted on us because of Newton’s 3rd law. Applying more force in turn increases the base-runner’s velocity. Catching: When catching a fly ball or grounder‚ it is best to move with the ball and not catch it right over your head or right in front
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to figure out the net force and its direction on the Apollo 13 spacecraft as it followed its path. NASA made sure that Apollo 13 would make it back to Earth and not be lost in space. Another scene in which Newton’s Law of Universal Gravitation was needed was when the Apollo 13 crew needed to execute a burn. This law helped them calculate the forces acting on them by other planetary objects‚ and therefore how much force their burn needed to apply. By simply adding together force vectors NASA could predict
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(deceleration) S = 2a v2 u2 = 2( 1) 0 102 = 2 100 = 50m It will travel 50m before coming to rest. 3. Body is kept on the horizontal table. If no force is applied‚ no frictional force will be there f frictional force F Applied force From grap it can be seen that when applied force is zero‚ frictional force is zero. 4. From the free body diagram‚ R – mg cos = 0 R = mg cos ..(1) For the block U = 0‚ s = 8m‚ t = 2sec. s = ut + ½ at2 8 = 0 + ½ a 22 a = 4m/s2
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1 1 2 3 C Motion I 7 (a) From 1 January 2009 to 10 January 2009‚ the watch runs slower than the actual time by 9 minutes. Therefore‚ when the actual time is 2:00 pm on 10 January 2009‚ the time shown on the watch should be 1:51 pm on 10 January 2009. Practice 1.1 (p. 6) D (a) Possible percentage error 10 −6 = × 100% 24 × 3600 = 1.16 × 10 % 1 (b) = 1 000 000 days 10 −6 –9 It would take 1 000 000 days to be in error by 1 s. (b) Percentage error 9 = × 100% 9 × 24 × 60 = 6.94 × 10–2%
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physics. According to Physics‚ the physical laws of matter‚ energy and the fundamental forces of nature govern the interactions between particles and physical entities (such as planets‚ molecules‚ atoms or the subatomic particles). Some of the basic pursuits of physics are describing the nature‚ measuring and quantifying of bodies and their motion‚ dynamics and so on. But what I want to touch up on is mass‚ force and weight. Considering that I am a Construction Management major‚ I believe these are
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Circular Motion Uniform circular motion is the movement of an object or particle trajectory at a constant speed around a circle with a fixed radius. The fixed radius‚ r‚ is the position of an object in uniform or circular motion relative to to the center of the circle. The length of the position vector of the circle does not change but its direction does as the object follows its circular path. In order to find the object’s velocity‚ one needs to find its displacement vector over the specific
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on a spring is oscillating or vibrating if it is moving in a repeated path at regular time intervals. We call this type of motion harmonic motion. For an object to continue oscillating there must be a restoring force continually trying to restore it to its equilibrium position. For‚ the force exerted by an ideal spring obeys Hooke’s law. As an object in simple harmonic motion oscillates‚ its energy is repeatedly converted from potential energy to kinetic energy‚ and vice – versa. The content contained
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just did it. I care about these laws because I’ve learned so much that I never really understood nor knew. Newton’s first law states “objects at rest will stay at rest unless an outside force acts on it and an object in motion will continue to stay in motion at constant speed in a straight line unless an outside force acts on it.” This means exactly what it says. If a ball is kicked it’ll go in a straight line until it hits a wall or someone stops it. If a ball is on the ground not moving it will stay
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Track Apparatus‚ Pulley‚ Weight hanger‚ Slotted Masses: 2pcs. 5 grams‚ 2 pcs. 10 grams‚ 1pc. 100 grams; string IV. Data and Results: Part1. Constant Mass and Increasing Net Force m1 (g)m2 (g)M(g)a(m/s2 )450150.32599.8609.80.612250.53859.8600.000350.75959.8750.749450.96109.9610.816551.180010.180.388 Part2. Constant Net Force and Increasing Mass m1 (g)m2 (g)M(g)a(m/s2 )gexpt’l%error257750.31959.9059.81.07106250.29559.7520.48988750.27709.6951.07009250.26309.7310.78409750.25159.8100.1020 V. Computation
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