Chapter 9 IMPULSE AND MOMENTUM COLLISION PROBLEMS A tennis ball and racket collision: a microscopic view COLLISION: FORCE VS TIME GRAPH A large force exerted during a small interval of time is called an impulsive force. LINEAR MOMENTUM The product of the particle’s mass and velocity is called the linear momentum p = mv As a vector quantity‚ the momentum can be represented in terms of its components: px= mvx py= mvy ALTERNATIVE FORM OF NEWTON’S SECOND LAW F = ma = m(dv/dt) =
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Initial velocity = (0.43m/0.43s) = 1.0m/s Initial Momentum = (Mass) x (Initial Velocity) P0 = (0.008kg) x (1.0m/s) = 0.008kgm/s Time =((2 x Displacement)/(Acceleration))1/2 Using vertical displacement and acceleration: Time = ((2 x 0.92m)/(9.8m/s2))1/2 = 0.43s Final velocities Stationary Ball (Ball 1): (0.32m/0.43s) = 0.73m/s = Final Velocity1 Rolling Ball (Ball 2): (0.072m/0.43s) = 0.17m/s = Final Velocity2 Final momentum = ((Mass1) x (VF1)) + ((Mass2) x (VF2)) Mass1=Mass2
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Lab: Momentum Conservation Abstract This experiment aims to test the law of conservation of momentum by using cart and track system. Procedure 1. Put two carts onto the track. 2. Hit the button on the cart so that they start to move at opposite directions. 3. Find the position where the carts hit the end at the same time. 4. Find the distance that each cart traveled. 5. Repeat step 1-4 with 500g and 1000g weights on one of the carts. Data and Calculation m1m2=x2x1
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Reform in 1900 – 1920 The reform in the early 1900’s was a change that desperately needed to happen. From the meat industries exposure to child labor reform was no doubt required. Progressive era reformers and the federal government were two large advocates for reform‚ they made a huge impact in health and policy but the federal government still faced criticism. The push for reform on the health standards was definitely one of the biggest impacts in 1900-1920. An example being the meat industry
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MOMENTUM QUESTIONS 1. Which has greater momentum: a train at rest or a moving skateboard? Since the train is not moving‚ it has zero momentum. The skateboard‚ as long as it has some speed‚ will have more momentum‚ since p = m*v. 2. What are the ways to increase impulse? Impulse depends on the magnitude of the applied external force and the time that the force acts on the system. By increasing either of those‚ impulse on a system will be increased‚ and the system’s momentum will change accordingly
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Angular momentum and its properties were devised over time by many of the great minds in physics. Newton and Kepler were probably the two biggest factors in the evolution of angular momentum. Angular momentum is the force which a moving body‚ following a curved path‚ has because of its mass and motion. Angular momentum is possessed by rotating objects. Understanding torque is the first step to understanding angular momentum.<br><br>Torque is the angular "version" of force. The units for torque are
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Physics G Unit 6 – Momentum Internet Lab – Momentum and Collisions Name: Date: Period: Website: http://phet.colorado.edu/ Play with the Sims Physics Motion Collision Lab Introduction: When objects move‚ they have momentum. Momentum‚ p‚ is the product of an object’s mass (kg) and its velocity (m/s). The unit for momentum‚ p‚ is kg·m/s. During a collision objects transfer momentum to each other‚ resulting in different motions than before the collision. In this activity you will study
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American progressive era‚ from 1890s to 1920s‚ is believed to be a period of societal awakening. Although‚ there is no particular date that could be mentioned to mark its end‚ yet people believe that it lasted for around 30 years. After the civil war‚ the rapidly developing American economy was facing hundreds of problems due to its structural weaknesses. The capitalist system came under severe criticism because of the prominent flaws in its basic structural composition. The issues like racial segregation
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Laboratory V: Conservation of Momentum Problem #1: Perfectly Inelastic Collisions John Greavu April 17‚ 2013 Physics 1301W‚ Professor: Evan Frodermann‚ TA: Mark Pepin Abstract A cart was given an initial velocity toward another stationary cart down a track. The initial velocity of the first cart as well as the masses of both carts was varied throughout multiple trials. Velcro placed on the ends of the carts caused the cars to stick together after colliding. Videos of the collision and the seconds
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early twentieth century‚ there were lots of reform efforts in an era called the Progressive Era. Many of these reform were extremely successful. Some of the main reforms during the Progressive Era included living conditions in cities as well as reform efforts in the workplace. These reforms were extremely important because they led to happier populus as well as less deaths. During the Progressive Era there was a political party that was called the Progressive Party. This political party was a third party
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