Si un automovil realiza un recorrido con una velocidad inicial de 4.2 m /s y al transcurrir 7 segundos, se detiene con una velocidad final de 10.0 m/s determina la aceleración?

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.