SCENARIO 4: Inelastic collision between balls of equal mass DIRECTIONS: STEP 1: Change the elasticity to 0% and make the mass of the red ball the same as the mass of the green ball . Select an easy whole number initial velocity for the red ball and make the velocity of the green ball zero. 1. Predict what will happen after the red ball hits the green ball by scribbling out the wrong answer choices in each answer grouping (EX: slower same/faster) After the collision, the red ball will move backwards/forwards at a speed that is slower/same/faster than its original speed. The green ball will move backwards/forwards at a speed that is slower/same/faster than the red ball's initial speed. The balls will bounce apart/stick together after the collision. 2. Run the simulation and see what happens. Were you right or wrong? O Right D Wrong STEP 2: Rerun the simulation. Fill in the data table below with the mass, velocity, and momentum BEFORE and AFTER the collision. Remember: the mass of the red and green balls should be the same but only the red ball is moving initially. Before Collision After Collision Velocity Momentum Velocity Momentum Ball Mass (kg ) (m/s) (kg *m/s) (m/s) (kg *m/s) 1 2 Total (Add Column values) Is the total momentum still conserved before and after an inelastic collision? ! Yes _ No What do you notice about the velocity of the combined masses (red and green ball) after the collision compared to the velocity of the red ball before the collision? Don't just mention that it is greater/or less than. Finish the last step of the following procedure for finding the final velocity (V.green) of the combined mass mag + mgreen Pin = Pout - Momentum in equals momentum out Inim-red "Vin-rad + min-grean "Vin-green = (Mag + Marsan)-f-red/green - Initial momentum or red plus initial momentum of green equals the final momentum of the comb. red/green mass mim-red In-red 0 = (m + m)-V f.rad/green - the green mass has no initial momentum Et-radigreen - solve for V-radigreen