In 1686 Sir Isaac Newton developed three laws of motion. These laws are involved in every single football play. Whether it is a kickoff‚ pass‚ run‚ or extra point inertia‚ force‚ acceleration‚ momentum‚ and impulse are involved. Newton’s first law is the law of inertia and it states a body continues in its state of rest or of uniform motion unless an unbalanced force acts upon it. Some actions effected by this law are a quarterback throwing a football‚ a running back or receiver running for a touchdown
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AS Level Physics: Terms & Definitions:- Measurement Random errors are errors of measurements that result in a scatter of readings about a mean value. Systematic errors are errors of measurement which occur according to some fixed patterns such that they consistently give out an over-estimation or under-estimation of the true value. Accuracy is a measure of how close the results of an experiment agree with the true value. Precision is a measure of how close the results of an experiment
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temperature (negative temperature coefficient thermistors only) 15. Explain why‚ when there is an electric current in a resistor‚ there is an energy transfer which heats the resistor 16. Explain the energy transfer (in 2.12 above) as the result of collisions between electrons and the ions in the lattice 17. 2.14 Distinguish between the advantages and disadvantages of the heating effect of an
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with trolley B. | TROLLEY B DUMMY | When trolley A hit trolley B the dummy in trolley B was jolted backward when the trolley stopped all of the sudden. | DISCUSSION QUESTION ANSWERS: 1. What happens to the dummy on trolley A during the collision? Explain why this happened. The dummy in trolley A slid forward
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speed (velocity)‚ mass‚ force‚ and the lack of air friction of the object that caused the extinction of the dinosaurs 65 million years ago was so great that it caused a collision with the Earth great enough to cause an extinction. Potential and kinetic energy are also involved in this. These forces and more such as‚ gravity‚ momentum‚ friction and more that we now know about can help us understand our history‚ create more inventions‚ and more. These forces can impact us by us knowing more about what
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that body is going to push back against me with an equal and opposite force. An important part of Newton’s law is momentum. In football terms this means the mass of a player multiplied by his velocity. Football players take advantage of speed and momentum to make contact and take their victims down right away. When football players get hard hits‚ some of the energy of the collision is transferred to the energy in sound waves in the air that you can hear. Newton’s Third Law is a big discovery in
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There were debates about their safety‚ especially relating to children‚ but over time‚ much of the country adopted mandatory seat-belt laws. Statistics have shown that the use of seat belts has saved thousands of lives that might have been lost in collisions. Like seat belts‚ the concept of the airbag -- a soft pillow to land against in a crash -- has been around for many years. The first patent on an inflatable crash-landing device for airplanes was filed during World War II. In the 1980s
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Impulse=15000Ns=15000(kg*m/s^2)(s) Impusle=15000kg*m/s 7. 15.0g bullet fired. Muzzle velocity 3250m/s from a rifle with mass 4.74kg and barrel length 75.0 cm. A) How long is bullet in barrel? d/s=t B) what is the force on the bullet while in the barrel? C) Find the bullet’s momentum as it leaves barrel. a) t=75cm/3250m/s 100cm=1m 75cm/1* 1m/100cm= .75m t=.75m/3250m/s=2.307E-4s time in barrel is 2.307E-4 seconds
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Physics 221 Summer 2012 HOMEWORK #3 Due Monday July 2‚ 2012 1 James Bond (90 kg)‚ outfitted with perfectly matching skis and skiware‚ is at the top of a steep slope that a secret spy like him can easily handle. He lets himself go from rest and smoothly slides down the h = 15 m high hill. A big parking lot lies at the bottom of the hill. Since the parking area has been cleared of snow‚ the friction between the ground and the skis brings our hero to a halt at point D‚ located at a distance
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box. When assigned the project of creating a device to secure eggs in a collision with a pendulum at increasing velocities‚ I immediately thought of a car crash. Cars must be built that so that they will protect the passengers during any type of collision‚ like my project must be built to protect the eggs. Upon this thinking I decided to design my egg crash project like the design of a car. I would create an inelastic collision between the pendulum and project‚ meaning
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