Collisions Inelastic Collisions Elastic Collisions Stationary Target Moving Target Collisions in 2-Dimensions (Glancing Collisions) Inelastic Collisions Collisions in which kinetic energy is not conserved. Initial kinetic energy is transformed into other types of energy (thermal‚ potential etc.) Total final kinetic energy is less than the total initial kinetic energy. If two objects stick together as a result of the collision‚ the collisions is inelastic. Even though the
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Newton’s Cradle Isaac Newton was a key figure in developing some basic laws of motion that apply to the world all around us. One object that demonstrates some of Newton’s Laws of Motion is Newton’s Cradle. Because Newton’s Cradle was not invented by Newton‚ the name is a bit misleading. Although there is still some confusion today as to who is the rightful inventor of this object‚ most sources claim that Newton’s Cradle was invented by Marius Morin and was later coined “Newton’s Cradle” by English
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Example problems involving collisions 1) On a horizontal frictionless surface a puck of mass m initially at speed u collides head-on (without rotation) with a stationary puck of mass M. Find the velocities of both puck after the collision if: i) the collision is fully elastic ii) the collision if fully inelastic. i) momentum: kinetic energy: mu = mv+MV (+ve in direction of initial u) 1 /2 m u2 = 1/2 m v2 + 1/2 M V2 2 eqns in 2 unknowns: V = (u - v) m/M substitute in K eqn: u2 = v2 + (M/m) V2 =
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Balloon powered car 1 How does the balloon car demonstrate that energy is transformed from potential energy to kinetic energy? Explain When the balloon has air inside it‚ the car and the balloon have potential energy stored inside it. When the air is released the car moves forward and has kinetic energy. 2 Where is most of the energy ’lost’ in this car? There is a number of different possible reasons that energy could have been lost in our car: some of the air in the balloon may have escaped through
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Minela Sljoka Notes on Physics Inertia- tendency of an object to maintain motion. Property of matter. Not newton’s first law. Matter wants to maintain motion- moving objects want to stay in motion if stopped wants to stay stopped. Mass is measure of inertia. Things have mass because they have inertia. Units: kg Symbol m in equation. Inertia is most constantly called rest mass but we call it mass because we are dealing with speeds not going to speed of light. Kinetic Energy- v^2 is proportional
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PRACTICE EXAM 2B – PHYS 15200 Part I. Multiple Choice Questions [2 pts each] Directions: Choose the alternative that best completes the statement or answers the question. Unless otherwise stated‚ assume ideal conditions (no air resistance‚ uniform gravity‚ etc.) ! ! ! ! ˆ ˆ 1) Let A = !3i + 4 ˆ and B = i + 2 ˆ . What is A • B ? j j (A) 3 (B) 5 (C) 8 (D) None of these. 2) A particle moving along the x axis has a potential energy given by the function U(y) = -5x4‚ where x is
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The conversion of potential energy to kinetic energy is what drives the roller coaster‚ and all of the kinetic energy you need for the ride is there once the coaster goes down the very first hill. Once the coaster gets going‚ there are different types of wheels that help keep the ride smooth. Roller coasters don’t have engines. But they do have energy. Once all passengers are in the coaster‚ the carts get released and begin to roll down the first hill. The force of gravity makes them accelerate downwards
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Momentum and Simple 1D Collisions PhET Lab Introduction: When objects move‚ they have momentum. Momentum‚ p‚ is simply the product of an object’s mass (kg) and its velocity (m/s). The unit for momentum‚ p‚ is kgm/s. During a collision‚ an object’s momentum can be transferred to impulse‚ which is the product of force (N) and time (s) over which the force acts. This allows us to write the momentum-impulse theorem: Procedure: Play with the Sims Physics Motion Collision Lab Work with 1D collisions
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The roller coaster is so fast. It is a roller coaster that is never seen before. When you see some roller coaster have some loops and small turns‚ well this is the complete opposite. Consequently‚ You will experience so much during the ride and what is even better is if you chose to ride in a cart that will go twice around for a little bit more so you do not have to wait in line again to ride it another time. The carts are aerodynamic so that he has less air resistance they will have a higher speed
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Abstract: In this experiment‚ two object collided both elastically and in inelastically‚ the purpose of this experiment is to study the principle of conservation of momentum in collisions using two bodies. We also calculated the amount of kinetic energy in elastic and inelastic collisions before and after the collision. Introduction: When bodies collide with each other‚ the total momentum p = mv‚ is always conserved regardless of the type of collision provided no external forces are present. There
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