Force of collision simulator experiments

Objects can bump into each other as well as into the ground. What happens?
Try the collision carts and find out

Cart 1 Cart 2 type of collision -------------What happens?------------------ Final velocities
1 kg / 5 ms initial velocity 1 kg / -5 ms initial velocity Elastic    
1 kg / 5 ms initial velocity 2 kg / -5 ms initial velocity      
1 kg / 5 ms initial velocity 1 kg / -5 ms initial velocity Inelastic    
1 kg / 5 ms initial velocity 2 kg / -5 ms initial velocity      
1 kg 2 kg Explosion    

What conclusions can you draw?

 

Design an additional experiment. Describe it below. Predict what will happen. Try it and see.