List two scientific questions that would be best explained using a model.

When the force acting on an object points at least partially in the direction of the motion the work done is considered to be negative

Work = force × a. work b. energy c. distance d. momentum

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.