Physics 12 M. Lam Collisions Simulation When objects move, they have momentum. Momentum, p, is the product of an object's mass and velocity. During a collision objects transfer momentum to each

other, resulting in different motions than before the collision. In this activity you will study the motion colliding objects. p=mv Objective Investigate the momentum before and after a collision for i) elastic collisions and ii) inelastic collisions Website: http://phet.colorado.edu Simulations> Physics > Motion > Collision Lab • Select "Intro" from the main menu . Check "More Data" Part 1: Elastic Collisions 1 2 3 4 M 2.0 kg 1.5 kg 1.0 kg 3.0 kg m₂ |m₁₂V₁₂+ m₂V₂1 = m₂v₁y+m₂v₂/ 1. Prior to simulating the collisions, fill out the mass and initial velocity columns. Simulate the four elastic collisions described below and complete the rest of the table. Initial 2.0 kg 3.0 kg 2.0 kg Vii 1.5 m/s 2.0 m/s 2.0 m/s V₂i 1.00 -1.0 m/s 0.0 m/s -1.0 m/s Protal kg-m/s 0 0 kg-m/s Viby 4.0 kg-m/s M VII Elasticity Inclass Name: Block: Final V21 Chang M 100% Elastic Ptotal 2. Two objects with the same mass move toward each other with the same speed and experience an elastic collision. Compare the final velocities (speed and direction) of each object to their initial velocities. 3. A less-massive moving object has an elastic collision with a more-massive object that is not moving. Compare the final velocity (speed and direction) of the less-massive object to its initial velocity.