set energy to loss In collision Units are Joules K=1/2 mv^2 When something is written in speed and you need velocity for equation just square the speed Joules equals kg times m^2/s^2 Velocity has more effect on kinetic energy than mass. Still objects have no kinetic energy. Hint: Energy variables are capital Momentum proportional to mass and velocity p=mv Units= kg time m/s And is vector in as direction as velocity Conservation laws are applied in closed systems only Collisions are closed Momentum
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happens to momentum when one marble collides with other marbles? Hypothesis: If a marble collides with increasingly more marbles‚ then the momentum will be transferred more slowly to the final marble‚ because momentum is conserved through an inelastic collision‚ but a longer distance will have be traveled by the kinetic energy. Independent Variable: The number of marbles. Dependent Variable: The momentum of the first marble and final marble. Control Variables: The same size/weight marbles‚ the same
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a velocity 3v and collides with another particle of mass 2m which is initially stationary. After the collision‚ the two particles move with the same velocity. Which row in the table gives the final velocity of the two particles and the loss in kinetic energy during the collision? [1] A B C D Final velocity v v 1.5 v 1.5 v Loss in kinetic energy mv2 3mv2 mv2 3mv2 3 In an inelastic collision which quantities are conserved? A B C D [1] total kinetic energy and total momentum but not total
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Throwing a football When the football travels through the air for a long pass it always follows a curved path because the force of gravity influences the movement of the ball in the vertical direction. As the ball travels up‚ gravity slows it down until it stops briefly at its peak height; the ball then comes down‚ and gravity accelerates it until it hits the ground. Projectile motion is the path of any object that is launched or thrown and has an arched course (howstuffworks) For the football
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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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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 just before and after
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Mechanics: Work‚ Energy‚ Momentum‚ Kinematics of Rotational Motion Jacque Lynn F Gabayno‚ Ph.D. Lecture Notes 1 Work as defined in Physics r r W =F s Force× Displacement = Force × Displacement *SI Units: 1 N.m = 1 Joules (i.e. same as the unit of energy) 2 Recall “Dot Product” The dot product allows us to multiply two vectors to get something that is SCALAR. r A r A For a constant force: r r r B = A B cos ! r B = Ax Bx + Ay By + Az Bz Only those along the direction of
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would be doing work. The amount of this work would be the size of the force being applied times the two yards traveled (work=Fd). The time it takes for this process to take place is called power (work/time=power). Also‚ this is an example of an inelastic collision‚ which is one in which the
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English actor in 1967. This popular executive toy exhibits various concepts related to physics including friction‚ collisions‚ conservation of energy‚ and conservation of momentum. Momentum is force of moving objects. It can be measured by multiplying an object’s mass and velocity. Basically‚ the concept of conservation of momentum is that the total momentum of objects before a collision is equal to the total momentum of the objects after the collisionIt is essential to remember that momentum is a
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I noticed that I have not described the rule of F=ma in either the last email or this one. Where would you suggest it be described? Somehow the details of adding forces and balanced forces were missed in the last email and also it did not make perfect sense for me to note. As far as I am concerned the khan academy does not lecture it so I am not too sure in what to do about this. I am assuming finding velocity is the sole purpose of applying the law of conservation of momentum. Is this true
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