The engineering cycle is
evaluate
design
prototype
test

and the scientific method cycle is
make observation
propose a hypothesis
test the hypothesis against observations and experiments
create a theory and go back to step 2

Me pl give an example of a collision in real life. use the law of conservation of energy to describe the transfer of momentum. be sure and discuss the momentum before and after the collision occurs. you will need at least 3 sentences to thoroughly answer this question.