Name: Physics 12 M. Lam Collisions Simulation Block: 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 Velocity Simulations > Physics > Motion > Collision Lab Momentum 0.5 m O Change in Momentum Center of Mass Kinetic Energy . Select "Intro" from the main menu O Values . Check "More Data" Elasticity 100% Constant Size 0.00 s G + Momenta Diagram More Data Mass (kg) Position (m) Velocity (m/s) Momentum (kg m/s) Vx Px 1 0.50 -1.00 1.00 0.50 1.50 1.00 -0.50 - 0.75 Part 1: Elastic Collisions Elasticity 100% m,Vit m2V 2; = miVis + m2 25 Inelastic Clastic 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 Final # m1 m2 V1i V2i Ptotal Vif V2f Ptotal 1 2.0 kg 2.0 kg 1.5 m/s O kg.m/s 2 1.5 kg 3.0 kg -1.0 m/s 0 kg.m/s 3 1.0 kg 2.0 kg 2.0 m/s 0.0 m/s 4 3.0 kg 2.0 m/s -1.0 m/s 4.0 kg.m/s 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