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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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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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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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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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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structure of the atom. Exactly seventy years later scientists and engineers at the European Organization for Nuclear Research (CERN) launched the Large Hadron Collider (LHC) which was designed to achieve quite the same purpose as Rutherford’s‚ particle collisions. However‚ this time the collider was not a simple particle emitter set up on a laboratory table but a circular tunnel of a 17 mile circumference that spread under villages and cow pastures of the French-Swiss border. Built with the collaboration
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WHAT IS TORQUE? Torque is a measure of how much a force acting on an object causes that object to rotate. The object rotates about an axis‚ which we will call the pivot point‚ and will label ’O ’. We will call the force ’F ’. The distance from the pivot point to the point where the force acts is called the moment arm‚ and is denoted by ’r ’. Note that this distance‚ ’r ’‚ is also a vector‚ and points from the axis of rotation to the point where the force acts. (Refer to Figure 1 for a pictoral
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