product of the amount of force on an object and the time during which the force is applied F*∆t An impulse causes change in momentum ∆p (p=momentum) ∆p=m∆v F∆t=m∆v Main idea #2: In an isolated system‚ momentum before a collision is equal to momentum after the collision. When one object exerts a force on a second object‚ the second one exerts a force on the first that’s equal in strength and opposite in direction. When you have an isolated system with no external forces‚ the initial total momentum
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of the bob on the spring and k is hookes constant. Hookes constant is the constant of proportionality of force against extension for any spring‚ and varies from spring to spring. In formulaic terms. . The unit for thisd quantity is newtons per metre. Substituting the above equation (Hooke’s Law) into the equation‚ ‚ and therefore‚ . g here is the acceleration due to gravity‚ as the force on the spring consists of the weight of the bob. On the moon‚ the time period of the pendulum would change
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……t2 = 4.081 √t2 = √4.081 ….t= 2.02 seconds to hit the ground. To determine the minimum speed required to clear 8m in 2.02 s just use D/T= 8/2.02= 3.96 m/s horizontally to clear 8 m from 20 m vertically. 5) Using acceleration = force * mass‚ we know the car had a force of 5000N‚ and a mass of 1500kg. 5000/1500 = -3.33 m/s deceleration. It took 5.6 seconds for the car to decelerate to 0‚ so multiply the deceleration/acceleration with the amount of time to obtain the initial speed of the vehicle
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April 17‚ 2015 (Friday) 1. A hydraulic forging press is capable of exerting a maximum force of 1‚000‚000 N. A cylindrical work part is to be cold upset forged. The starting part has a diameter of 30 mm and a height of 30 mm. The flow curve of the metal is defined by K=400 MPa and n=0.2. Suppose that the coefficient of friction between the work part and the die is 0.1. a. In Excel‚ plot a graph of forging force vs. work height for the values of work height from 20 mm to 15 mm. b. Determine the maximum
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Friction on a surface. Aim: To establish the relation between weight of a rectangular wooden block lying on a horizontal table and the minimum force required to just move it using a spring balance Materials required: A rectangular block of wood with a hook ‚ set of weights‚ strong thread and a spring balance. Theory: The force of friction acting on a block of wood is proportional to the normal reaction acting on the block. By the third law of motion‚ normal reaction is equal to the weight
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Friction is the force resisting the relative motion of solid surfaces‚ fluid layers‚ and material elements sliding against each other. There are several types of friction: Dry friction resists relative lateral motion of two solid surfaces in contact. Dry friction is subdivided into static friction ("stiction") between non-moving surfaces‚ and kinetic friction between moving surfaces. Fluid friction describes the friction between layers of a viscous fluid that are moving relative to each other.[1][2]
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Gravity Lab Objective: The objective of this lab assignment is todetermine if objects with different mass fall at the same rate or vatying rate in the presence of ar and in a vacuum. Problem: Whateffect does Earth’s gravitational force have on objects of different masses? Hypothesis: If the sand paper falls at the same rate as the paper towel than it will end in the ground first. Objective: The objective of this lab assignment is to determine if objects with different masses fall at the same
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Ryan Grizzle Period 7 Mouse Trap Car Essay This purpose of this essay is to relate what I learned in first semester to my mouse trap car and its motion. My mouse trap car is made with paint stirring sticks as the body‚ and CD’s serve as the wheels. The back wheels‚ or CD’s‚ have a rubber balloon around them‚ and there is a string wrapped around them attached to the mouse trap in order to make it move. My mouse trap car is decorated very festive‚ in order for Christmas. I predict my car
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the current situation favors the change process and despite the possible restraining forces; Deloitte & Touche is in a good position in successfully implementing the strategies. I will then discuss the possible restraining forces that would hinder the change and comment on the recommendations and strategies by the Task Force. Lastly‚ I will suggest further solutions that would help in overcoming the restraining forces so that this would further aid in the development of the change process. Mike Cook
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Pool of Issue Topics 4. Scandals are useful because they focus our attention on problems in ways that no speaker or reformer ever could. Write a response in which you discuss the extent to which you agree or disagree with the claim. In developing and supporting your position‚ be sure to address the most compelling reasons and/or examples that could be used to challenge your position. (+) scandals focus public’s attention on problems Poisonous milk scandal in China: melamine Vedan environmental
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