Bouncing (Elastic) Collisions;

Enter the data into the spreadsheet and plot the initial energyversus the final energy. Do a straight line fit to find the slopeand intercept of this graph. Put the best-fit straight line on yourgraph. Does the slope and y-intercept agree, to within 90%confidence, with the value you expect?

Results:

Elastic: Mass of left car = 200kg, Mass of right car = 400kg

initial velocity of left car initial velocity of rightcar         final velocityof left car     Final velocity of right car

1m/s,     0m/s.                                      about -0.25m/s.             about 0.5 m/s.

2m/s,     0m/s.                                      about -0.5m/s.              about 1.75 m/s.

3m/s,     0m/s.                                      about -1m/s.                 about 2 m/s.

3m/s,   -1m/s.                                       about -2.25m/s.            about 1.8 m/s.

3m/s,   -2m/s.                                       about -3.9m/s.              

about 1.5 m/s.